diff --git a/.env b/.env
index 1670bdf..c5a03a1 100644
--- a/.env
+++ b/.env
@@ -1,12 +1,9 @@
-# User and Group settings
-# For automatic host user detection, run before docker-compose:
-# export USER_ID=$(id -u) && export GROUP_ID=$(id -g)
-# Otherwise, these defaults will be used:
+# === SYSTEM CONFIGURATION ===
 USER_ID=1000
 GROUP_ID=1000
 USER_NAME=www-data
 GROUP_NAME=www-data
 
-# Yii2 environment settings
+# === YII2 APPLICATION ===
 YII_DEBUG=true
 YII_ENV=dev
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index a8cfb23..0c908e6 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -24,5 +24,6 @@ jobs:
       AUTH_TOKEN: ${{ secrets.AUTH_TOKEN }}
       CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
     with:
+      codeception-command: vendor/bin/codecept run --env php-builtin --coverage-xml
       coverage-file: runtime/output/coverage.xml
-      extensions: gd, intl
+      extensions: gd, intl, pcov
diff --git a/.github/workflows/docker.yml b/.github/workflows/docker.yml
index 20545be..e017cc0 100644
--- a/.github/workflows/docker.yml
+++ b/.github/workflows/docker.yml
@@ -39,7 +39,7 @@ jobs:
         run: docker exec yii2-apache vendor/bin/codecept build
 
       - name: Run codeception tests.
-        run: docker exec yii2-apache vendor/bin/codecept run
+        run: docker exec yii2-apache vendor/bin/codecept run --env dockerized
 
   test-caddy:
     runs-on: ubuntu-latest
@@ -67,7 +67,7 @@ jobs:
         run: docker exec yii2-caddy vendor/bin/codecept build
 
       - name: Run codeception tests.
-        run: docker exec yii2-caddy vendor/bin/codecept run
+        run: docker exec yii2-caddy vendor/bin/codecept run --env dockerized
 
   test-frankenphp:
     runs-on: ubuntu-latest
@@ -95,7 +95,7 @@ jobs:
         run: docker exec yii2-frankenphp vendor/bin/codecept build
 
       - name: Run codeception tests.
-        run: docker exec yii2-frankenphp vendor/bin/codecept run
+        run: docker exec yii2-frankenphp vendor/bin/codecept run --env dockerized
 
   test-nginx:
     runs-on: ubuntu-latest
@@ -123,4 +123,4 @@ jobs:
         run: docker exec yii2-nginx vendor/bin/codecept build
 
       - name: Run codeception tests.
-        run: docker exec yii2-nginx vendor/bin/codecept run
+        run: docker exec yii2-nginx vendor/bin/codecept run --env dockerized
diff --git a/codeception.yml b/codeception.yml
index 5732d5a..1f209b7 100644
--- a/codeception.yml
+++ b/codeception.yml
@@ -3,10 +3,10 @@ bootstrap: _bootstrap.php
 support_namespace: Support
 paths:
   tests: tests
-  output: public/runtime/output
+  output: runtime/output
   data: tests/Support/data
   support: tests/Support
-  envs: public/runtime/_envs
+  envs: tests/_envs
 actor_suffix: Tester
 settings:
   memory_limit: 1024M
diff --git a/composer.json b/composer.json
index 4a877da..a67d13f 100644
--- a/composer.json
+++ b/composer.json
@@ -15,6 +15,7 @@
         "ui-awesome/html": "^0.3",
         "ui-awesome/html-component-bootstrap5": "^1.0@dev",
         "ui-awesome/html-svg":"^0.2",
+        "vlucas/phpdotenv": "^5.6",
         "yii2-extensions/localeurls": "^0.1.0",
         "yiisoft/yii2": "^2.0.53|^22",
         "yiisoft/yii2-bootstrap5": "^2.0.50|^22",
@@ -26,6 +27,7 @@
         "codeception/lib-innerbrowser": "^4.0",
         "codeception/module-asserts": "^3.0",
         "codeception/module-filesystem": "^3.0",
+        "codeception/module-phpbrowser": "^3.0",
         "codeception/module-yii2": "^1.1",
         "codeception/verify": "^3.0",
         "maglnet/composer-require-checker": "^4.6",
@@ -75,6 +77,6 @@
         "ecs": "./vendor/bin/ecs --fix",
         "rector": "./vendor/bin/rector process src",
         "static": "./vendor/bin/phpstan analyse src --memory-limit=512M",
-        "tests": "./vendor/bin/codecept run"
+        "tests": "./vendor/bin/codecept run --env php-builtin"
     }
 }
diff --git a/composer.lock b/composer.lock
index 42c15b7..f885f5d 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "53e1879ad59572550fd6803faa3cf37a",
+    "content-hash": "a00d0ea1f531a8651ce8f8e80bbe8df3",
     "packages": [
         {
             "name": "cebe/markdown",
@@ -958,6 +958,68 @@
             },
             "time": "2024-11-01T03:51:45+00:00"
         },
+        {
+            "name": "graham-campbell/result-type",
+            "version": "v1.1.3",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/GrahamCampbell/Result-Type.git",
+                "reference": "3ba905c11371512af9d9bdd27d99b782216b6945"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/GrahamCampbell/Result-Type/zipball/3ba905c11371512af9d9bdd27d99b782216b6945",
+                "reference": "3ba905c11371512af9d9bdd27d99b782216b6945",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^7.2.5 || ^8.0",
+                "phpoption/phpoption": "^1.9.3"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "^8.5.39 || ^9.6.20 || ^10.5.28"
+            },
+            "type": "library",
+            "autoload": {
+                "psr-4": {
+                    "GrahamCampbell\\ResultType\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Graham Campbell",
+                    "email": "hello@gjcampbell.co.uk",
+                    "homepage": "https://github.com/GrahamCampbell"
+                }
+            ],
+            "description": "An Implementation Of The Result Type",
+            "keywords": [
+                "Graham Campbell",
+                "GrahamCampbell",
+                "Result Type",
+                "Result-Type",
+                "result"
+            ],
+            "support": {
+                "issues": "https://github.com/GrahamCampbell/Result-Type/issues",
+                "source": "https://github.com/GrahamCampbell/Result-Type/tree/v1.1.3"
+            },
+            "funding": [
+                {
+                    "url": "https://github.com/GrahamCampbell",
+                    "type": "github"
+                },
+                {
+                    "url": "https://tidelift.com/funding/github/packagist/graham-campbell/result-type",
+                    "type": "tidelift"
+                }
+            ],
+            "time": "2024-07-20T21:45:45+00:00"
+        },
         {
             "name": "justinrainbow/json-schema",
             "version": "6.4.2",
@@ -1228,6 +1290,81 @@
             ],
             "time": "2025-03-13T13:03:07+00:00"
         },
+        {
+            "name": "phpoption/phpoption",
+            "version": "1.9.3",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/schmittjoh/php-option.git",
+                "reference": "e3fac8b24f56113f7cb96af14958c0dd16330f54"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/schmittjoh/php-option/zipball/e3fac8b24f56113f7cb96af14958c0dd16330f54",
+                "reference": "e3fac8b24f56113f7cb96af14958c0dd16330f54",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^7.2.5 || ^8.0"
+            },
+            "require-dev": {
+                "bamarni/composer-bin-plugin": "^1.8.2",
+                "phpunit/phpunit": "^8.5.39 || ^9.6.20 || ^10.5.28"
+            },
+            "type": "library",
+            "extra": {
+                "bamarni-bin": {
+                    "bin-links": true,
+                    "forward-command": false
+                },
+                "branch-alias": {
+                    "dev-master": "1.9-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "PhpOption\\": "src/PhpOption/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "Apache-2.0"
+            ],
+            "authors": [
+                {
+                    "name": "Johannes M. Schmitt",
+                    "email": "schmittjoh@gmail.com",
+                    "homepage": "https://github.com/schmittjoh"
+                },
+                {
+                    "name": "Graham Campbell",
+                    "email": "hello@gjcampbell.co.uk",
+                    "homepage": "https://github.com/GrahamCampbell"
+                }
+            ],
+            "description": "Option Type for PHP",
+            "keywords": [
+                "language",
+                "option",
+                "php",
+                "type"
+            ],
+            "support": {
+                "issues": "https://github.com/schmittjoh/php-option/issues",
+                "source": "https://github.com/schmittjoh/php-option/tree/1.9.3"
+            },
+            "funding": [
+                {
+                    "url": "https://github.com/GrahamCampbell",
+                    "type": "github"
+                },
+                {
+                    "url": "https://tidelift.com/funding/github/packagist/phpoption/phpoption",
+                    "type": "tidelift"
+                }
+            ],
+            "time": "2024-07-20T21:41:07+00:00"
+        },
         {
             "name": "psr/container",
             "version": "2.0.2",
@@ -3760,6 +3897,90 @@
             },
             "time": "2024-03-31T13:02:29+00:00"
         },
+        {
+            "name": "vlucas/phpdotenv",
+            "version": "v5.6.2",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/vlucas/phpdotenv.git",
+                "reference": "24ac4c74f91ee2c193fa1aaa5c249cb0822809af"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/vlucas/phpdotenv/zipball/24ac4c74f91ee2c193fa1aaa5c249cb0822809af",
+                "reference": "24ac4c74f91ee2c193fa1aaa5c249cb0822809af",
+                "shasum": ""
+            },
+            "require": {
+                "ext-pcre": "*",
+                "graham-campbell/result-type": "^1.1.3",
+                "php": "^7.2.5 || ^8.0",
+                "phpoption/phpoption": "^1.9.3",
+                "symfony/polyfill-ctype": "^1.24",
+                "symfony/polyfill-mbstring": "^1.24",
+                "symfony/polyfill-php80": "^1.24"
+            },
+            "require-dev": {
+                "bamarni/composer-bin-plugin": "^1.8.2",
+                "ext-filter": "*",
+                "phpunit/phpunit": "^8.5.34 || ^9.6.13 || ^10.4.2"
+            },
+            "suggest": {
+                "ext-filter": "Required to use the boolean validator."
+            },
+            "type": "library",
+            "extra": {
+                "bamarni-bin": {
+                    "bin-links": true,
+                    "forward-command": false
+                },
+                "branch-alias": {
+                    "dev-master": "5.6-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Dotenv\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "BSD-3-Clause"
+            ],
+            "authors": [
+                {
+                    "name": "Graham Campbell",
+                    "email": "hello@gjcampbell.co.uk",
+                    "homepage": "https://github.com/GrahamCampbell"
+                },
+                {
+                    "name": "Vance Lucas",
+                    "email": "vance@vancelucas.com",
+                    "homepage": "https://github.com/vlucas"
+                }
+            ],
+            "description": "Loads environment variables from `.env` to `getenv()`, `$_ENV` and `$_SERVER` automagically.",
+            "keywords": [
+                "dotenv",
+                "env",
+                "environment"
+            ],
+            "support": {
+                "issues": "https://github.com/vlucas/phpdotenv/issues",
+                "source": "https://github.com/vlucas/phpdotenv/tree/v5.6.2"
+            },
+            "funding": [
+                {
+                    "url": "https://github.com/GrahamCampbell",
+                    "type": "github"
+                },
+                {
+                    "url": "https://tidelift.com/funding/github/packagist/vlucas/phpdotenv",
+                    "type": "tidelift"
+                }
+            ],
+            "time": "2025-04-30T23:37:27+00:00"
+        },
         {
             "name": "voku/anti-xss",
             "version": "4.1.42",
@@ -4975,6 +5196,71 @@
             },
             "time": "2023-12-08T19:23:28+00:00"
         },
+        {
+            "name": "codeception/module-phpbrowser",
+            "version": "3.0.1",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/Codeception/module-phpbrowser.git",
+                "reference": "a972411f60cd00d00d5e5e3b35496ba4a23bcffc"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/Codeception/module-phpbrowser/zipball/a972411f60cd00d00d5e5e3b35496ba4a23bcffc",
+                "reference": "a972411f60cd00d00d5e5e3b35496ba4a23bcffc",
+                "shasum": ""
+            },
+            "require": {
+                "codeception/codeception": "*@dev",
+                "codeception/lib-innerbrowser": "*@dev",
+                "ext-json": "*",
+                "guzzlehttp/guzzle": "^7.4",
+                "php": "^8.0",
+                "symfony/browser-kit": "^5.4 || ^6.0 || ^7.0"
+            },
+            "conflict": {
+                "codeception/codeception": "<5.0",
+                "codeception/lib-innerbrowser": "<3.0"
+            },
+            "require-dev": {
+                "aws/aws-sdk-php": "^3.199",
+                "codeception/module-rest": "^2.0 || *@dev",
+                "ext-curl": "*"
+            },
+            "suggest": {
+                "codeception/phpbuiltinserver": "Start and stop PHP built-in web server for your tests"
+            },
+            "type": "library",
+            "autoload": {
+                "classmap": [
+                    "src/"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Michael Bodnarchuk"
+                },
+                {
+                    "name": "Gintautas Miselis"
+                }
+            ],
+            "description": "Codeception module for testing web application over HTTP",
+            "homepage": "https://codeception.com/",
+            "keywords": [
+                "codeception",
+                "functional-testing",
+                "http"
+            ],
+            "support": {
+                "issues": "https://github.com/Codeception/module-phpbrowser/issues",
+                "source": "https://github.com/Codeception/module-phpbrowser/tree/3.0.1"
+            },
+            "time": "2023-12-08T19:41:28+00:00"
+        },
         {
             "name": "codeception/module-yii2",
             "version": "1.1.12",
@@ -5126,6 +5412,215 @@
             },
             "time": "2025-04-16T07:12:02+00:00"
         },
+        {
+            "name": "guzzlehttp/guzzle",
+            "version": "7.9.3",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/guzzle/guzzle.git",
+                "reference": "7b2f29fe81dc4da0ca0ea7d42107a0845946ea77"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/guzzle/guzzle/zipball/7b2f29fe81dc4da0ca0ea7d42107a0845946ea77",
+                "reference": "7b2f29fe81dc4da0ca0ea7d42107a0845946ea77",
+                "shasum": ""
+            },
+            "require": {
+                "ext-json": "*",
+                "guzzlehttp/promises": "^1.5.3 || ^2.0.3",
+                "guzzlehttp/psr7": "^2.7.0",
+                "php": "^7.2.5 || ^8.0",
+                "psr/http-client": "^1.0",
+                "symfony/deprecation-contracts": "^2.2 || ^3.0"
+            },
+            "provide": {
+                "psr/http-client-implementation": "1.0"
+            },
+            "require-dev": {
+                "bamarni/composer-bin-plugin": "^1.8.2",
+                "ext-curl": "*",
+                "guzzle/client-integration-tests": "3.0.2",
+                "php-http/message-factory": "^1.1",
+                "phpunit/phpunit": "^8.5.39 || ^9.6.20",
+                "psr/log": "^1.1 || ^2.0 || ^3.0"
+            },
+            "suggest": {
+                "ext-curl": "Required for CURL handler support",
+                "ext-intl": "Required for Internationalized Domain Name (IDN) support",
+                "psr/log": "Required for using the Log middleware"
+            },
+            "type": "library",
+            "extra": {
+                "bamarni-bin": {
+                    "bin-links": true,
+                    "forward-command": false
+                }
+            },
+            "autoload": {
+                "files": [
+                    "src/functions_include.php"
+                ],
+                "psr-4": {
+                    "GuzzleHttp\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Graham Campbell",
+                    "email": "hello@gjcampbell.co.uk",
+                    "homepage": "https://github.com/GrahamCampbell"
+                },
+                {
+                    "name": "Michael Dowling",
+                    "email": "mtdowling@gmail.com",
+                    "homepage": "https://github.com/mtdowling"
+                },
+                {
+                    "name": "Jeremy Lindblom",
+                    "email": "jeremeamia@gmail.com",
+                    "homepage": "https://github.com/jeremeamia"
+                },
+                {
+                    "name": "George Mponos",
+                    "email": "gmponos@gmail.com",
+                    "homepage": "https://github.com/gmponos"
+                },
+                {
+                    "name": "Tobias Nyholm",
+                    "email": "tobias.nyholm@gmail.com",
+                    "homepage": "https://github.com/Nyholm"
+                },
+                {
+                    "name": "Márk Sági-Kazár",
+                    "email": "mark.sagikazar@gmail.com",
+                    "homepage": "https://github.com/sagikazarmark"
+                },
+                {
+                    "name": "Tobias Schultze",
+                    "email": "webmaster@tubo-world.de",
+                    "homepage": "https://github.com/Tobion"
+                }
+            ],
+            "description": "Guzzle is a PHP HTTP client library",
+            "keywords": [
+                "client",
+                "curl",
+                "framework",
+                "http",
+                "http client",
+                "psr-18",
+                "psr-7",
+                "rest",
+                "web service"
+            ],
+            "support": {
+                "issues": "https://github.com/guzzle/guzzle/issues",
+                "source": "https://github.com/guzzle/guzzle/tree/7.9.3"
+            },
+            "funding": [
+                {
+                    "url": "https://github.com/GrahamCampbell",
+                    "type": "github"
+                },
+                {
+                    "url": "https://github.com/Nyholm",
+                    "type": "github"
+                },
+                {
+                    "url": "https://tidelift.com/funding/github/packagist/guzzlehttp/guzzle",
+                    "type": "tidelift"
+                }
+            ],
+            "time": "2025-03-27T13:37:11+00:00"
+        },
+        {
+            "name": "guzzlehttp/promises",
+            "version": "2.2.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/guzzle/promises.git",
+                "reference": "7c69f28996b0a6920945dd20b3857e499d9ca96c"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/guzzle/promises/zipball/7c69f28996b0a6920945dd20b3857e499d9ca96c",
+                "reference": "7c69f28996b0a6920945dd20b3857e499d9ca96c",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^7.2.5 || ^8.0"
+            },
+            "require-dev": {
+                "bamarni/composer-bin-plugin": "^1.8.2",
+                "phpunit/phpunit": "^8.5.39 || ^9.6.20"
+            },
+            "type": "library",
+            "extra": {
+                "bamarni-bin": {
+                    "bin-links": true,
+                    "forward-command": false
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "GuzzleHttp\\Promise\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Graham Campbell",
+                    "email": "hello@gjcampbell.co.uk",
+                    "homepage": "https://github.com/GrahamCampbell"
+                },
+                {
+                    "name": "Michael Dowling",
+                    "email": "mtdowling@gmail.com",
+                    "homepage": "https://github.com/mtdowling"
+                },
+                {
+                    "name": "Tobias Nyholm",
+                    "email": "tobias.nyholm@gmail.com",
+                    "homepage": "https://github.com/Nyholm"
+                },
+                {
+                    "name": "Tobias Schultze",
+                    "email": "webmaster@tubo-world.de",
+                    "homepage": "https://github.com/Tobion"
+                }
+            ],
+            "description": "Guzzle promises library",
+            "keywords": [
+                "promise"
+            ],
+            "support": {
+                "issues": "https://github.com/guzzle/promises/issues",
+                "source": "https://github.com/guzzle/promises/tree/2.2.0"
+            },
+            "funding": [
+                {
+                    "url": "https://github.com/GrahamCampbell",
+                    "type": "github"
+                },
+                {
+                    "url": "https://github.com/Nyholm",
+                    "type": "github"
+                },
+                {
+                    "url": "https://tidelift.com/funding/github/packagist/guzzlehttp/promises",
+                    "type": "tidelift"
+                }
+            ],
+            "time": "2025-03-27T13:27:01+00:00"
+        },
         {
             "name": "guzzlehttp/psr7",
             "version": "2.7.1",
@@ -6157,16 +6652,16 @@
         },
         {
             "name": "phpunit/phpunit",
-            "version": "12.2.6",
+            "version": "12.2.7",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/phpunit.git",
-                "reference": "638644c62a58f04974da115f98981c9b48564021"
+                "reference": "8b1348b254e5959acaf1539c6bd790515fb49414"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/sebastianbergmann/phpunit/zipball/638644c62a58f04974da115f98981c9b48564021",
-                "reference": "638644c62a58f04974da115f98981c9b48564021",
+                "url": "https://api.github.com/repos/sebastianbergmann/phpunit/zipball/8b1348b254e5959acaf1539c6bd790515fb49414",
+                "reference": "8b1348b254e5959acaf1539c6bd790515fb49414",
                 "shasum": ""
             },
             "require": {
@@ -6176,7 +6671,7 @@
                 "ext-mbstring": "*",
                 "ext-xml": "*",
                 "ext-xmlwriter": "*",
-                "myclabs/deep-copy": "^1.13.1",
+                "myclabs/deep-copy": "^1.13.3",
                 "phar-io/manifest": "^2.0.4",
                 "phar-io/version": "^3.2.1",
                 "php": ">=8.3",
@@ -6234,7 +6729,7 @@
             "support": {
                 "issues": "https://github.com/sebastianbergmann/phpunit/issues",
                 "security": "https://github.com/sebastianbergmann/phpunit/security/policy",
-                "source": "https://github.com/sebastianbergmann/phpunit/tree/12.2.6"
+                "source": "https://github.com/sebastianbergmann/phpunit/tree/12.2.7"
             },
             "funding": [
                 {
@@ -6258,7 +6753,59 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2025-07-04T06:00:16+00:00"
+            "time": "2025-07-11T04:11:13+00:00"
+        },
+        {
+            "name": "psr/http-client",
+            "version": "1.0.3",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/php-fig/http-client.git",
+                "reference": "bb5906edc1c324c9a05aa0873d40117941e5fa90"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/php-fig/http-client/zipball/bb5906edc1c324c9a05aa0873d40117941e5fa90",
+                "reference": "bb5906edc1c324c9a05aa0873d40117941e5fa90",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^7.0 || ^8.0",
+                "psr/http-message": "^1.0 || ^2.0"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.0.x-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Psr\\Http\\Client\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "PHP-FIG",
+                    "homepage": "https://www.php-fig.org/"
+                }
+            ],
+            "description": "Common interface for HTTP clients",
+            "homepage": "https://github.com/php-fig/http-client",
+            "keywords": [
+                "http",
+                "http-client",
+                "psr",
+                "psr-18"
+            ],
+            "support": {
+                "source": "https://github.com/php-fig/http-client"
+            },
+            "time": "2023-09-23T14:17:50+00:00"
         },
         {
             "name": "psr/http-factory",
diff --git a/public/index.php b/public/index.php
index 6f6f2bd..e8074db 100644
--- a/public/index.php
+++ b/public/index.php
@@ -2,10 +2,12 @@
 
 declare(strict_types=1);
 
-use yii\web\Application;
+require_once __DIR__ . '/../vendor/autoload.php';
+require_once __DIR__ . '/../vendor/yiisoft/yii2/Yii.php';
 
-defined('YII_DEBUG') || define('YII_DEBUG', false);
-defined('YII_ENV') || define('YII_ENV', 'prod');
+// Load environment variables from .env file
+$dotenv = Dotenv\Dotenv::createImmutable(dirname(__DIR__));
+$dotenv->safeLoad();
 
 if (getenv('YII_C3')) {
     $c3 = dirname(__DIR__) . '/c3.php';
@@ -15,10 +17,7 @@
     }
 }
 
-require_once __DIR__ . '/../vendor/autoload.php';
-require_once __DIR__ . '/../vendor/yiisoft/yii2/Yii.php';
-
 $config = require dirname(__DIR__) . '/config/web/app.php';
 
-$app = new Application($config);
+$app = new yii\web\Application($config);
 $app->run();
diff --git a/tests/Acceptance.suite.yml b/tests/Acceptance.suite.yml
index 41b4461..03e52e8 100644
--- a/tests/Acceptance.suite.yml
+++ b/tests/Acceptance.suite.yml
@@ -4,14 +4,8 @@
 # Perform tests in browser using the WebDriver or PhpBrowser.
 # If you need both WebDriver and PHPBrowser tests - create a separate suite.
 actor: AcceptanceTester
-extensions:
-  enabled:
-    - Codeception\Extension\RunProcess:
-        0: ./yii serve
-        sleep: 1
 modules:
     enabled:
-      - Filesystem
-      - Yii2
-      - Asserts
+        - PhpBrowser:
+            url: localhost:8080
 step_decorators: ~
diff --git a/tests/Acceptance/AboutCest.php b/tests/Acceptance/AboutCest.php
index 509df46..353da36 100644
--- a/tests/Acceptance/AboutCest.php
+++ b/tests/Acceptance/AboutCest.php
@@ -11,7 +11,7 @@ final class AboutCest
     public function aboutPage(AcceptanceTester $I): void
     {
         $I->amGoingTo('navigate to the About page.');
-        $I->amOnRoute('site/about');
+        $I->amOnPage('site/about');
 
         $I->wantTo('ensure that About page works.');
 
diff --git a/tests/Acceptance/ContactCest.php b/tests/Acceptance/ContactCest.php
index acfb3ca..617693a 100644
--- a/tests/Acceptance/ContactCest.php
+++ b/tests/Acceptance/ContactCest.php
@@ -11,7 +11,7 @@ final class ContactCest
     public function contactPage(AcceptanceTester $I): void
     {
         $I->amGoingTo('navigate to the Contact page.');
-        $I->amOnRoute('contact/index');
+        $I->amOnPage('contact/index');
 
         $I->wantTo('ensure that Contact page works.');
 
diff --git a/tests/Acceptance/SiteCest.php b/tests/Acceptance/SiteCest.php
index f165f0a..95bf6ff 100644
--- a/tests/Acceptance/SiteCest.php
+++ b/tests/Acceptance/SiteCest.php
@@ -11,7 +11,7 @@ final class SiteCest
     public function homePage(AcceptanceTester $I): void
     {
         $I->amGoingTo('navigate to the Home page.');
-        $I->amOnRoute('/');
+        $I->amOnPage('/');
 
         $I->wantTo('ensure that Home page works.');
 
diff --git a/tests/Functional.suite.yml b/tests/Functional.suite.yml
index 3e33c70..a9fc97f 100644
--- a/tests/Functional.suite.yml
+++ b/tests/Functional.suite.yml
@@ -7,7 +7,7 @@
 actor: FunctionalTester
 modules:
     enabled:
-      - Filesystem
-      - Yii2
-      - Asserts
+        - Filesystem
+        - Yii2
+        - Asserts
 step_decorators: ~
diff --git a/tests/Functional/SiteCest.php b/tests/Functional/SiteCest.php
new file mode 100644
index 0000000..39dc2d8
--- /dev/null
+++ b/tests/Functional/SiteCest.php
@@ -0,0 +1,25 @@
+<?php
+
+declare(strict_types=1);
+
+namespace app\tests\Functional;
+
+use app\tests\Support\FunctionalTester;
+
+final class SiteCest
+{
+    public function homePage(FunctionalTester $I): void
+    {
+        $I->amGoingTo('navigate to the Home page.');
+        $I->amOnPage('/');
+
+        $I->wantTo('ensure that Home page works.');
+
+        $I->seeResponseCodeIs(200);
+        $I->expectTo('see page index.');
+        $I->seeInTitle('Index');
+        $I->seeElement('body');
+        $I->see('Web Application', 'h1');
+        $I->see('English');
+    }
+}
diff --git a/tests/Unit.suite.yml b/tests/Unit.suite.yml
index b1b434e..c819da1 100644
--- a/tests/Unit.suite.yml
+++ b/tests/Unit.suite.yml
@@ -4,7 +4,7 @@
 actor: UnitTester
 modules:
     enabled:
-      - Asserts
-      - Yii2:
+        - Asserts
+        - Yii2:
             part: [orm, email, fixtures]
 step_decorators: ~
diff --git a/tests/_envs/dockerized.yml b/tests/_envs/dockerized.yml
new file mode 100644
index 0000000..546f0cc
--- /dev/null
+++ b/tests/_envs/dockerized.yml
@@ -0,0 +1,4 @@
+modules:
+    config:
+        PhpBrowser:
+            url: https://localhost:443
diff --git a/tests/_envs/php-builtin.yml b/tests/_envs/php-builtin.yml
new file mode 100644
index 0000000..929ab08
--- /dev/null
+++ b/tests/_envs/php-builtin.yml
@@ -0,0 +1,9 @@
+extensions:
+    enabled:
+        - Codeception\Extension\RunProcess:
+            0: php -d variables_order=EGPCS -S localhost:8085 -t public
+            sleep: 1
+modules:
+    config:
+        PhpBrowser:
+            url: http://localhost:8085