Automatically deploy snapshots to central (attempt 3)

Author: jozic

.github/workflows/snapshot.yml

@@ -4,6 +4,9 @@ on:
   push:
     branches:
       - main
+  pull_request:
+    branches:
+      - main
 
 jobs:
   deploy:
@@ -16,15 +19,16 @@ jobs:
           distribution: 'temurin'
           java-version: '17'
           cache: maven
-          server-id: central
+          server-id: central # Value of the distributionManagement/repository/id field of the pom.xml
           server-username: SONATYPE_USERNAME
           server-password: SONATYPE_PASSWORD
-          gpg-private-key: GPG_PRIVATE_KEY
-          gpg-passphrase: GPG_PASSPHRASE
+          gpg-private-key: ${{ secrets.GPG_PRIVATE_KEY }} # has to be read directly from secrets
+          gpg-passphrase: MAVEN_GPG_PASSPHRASE
+      - name: gpg list
+        run: gpg --list-secret-keys --keyid-format=long
       - name: Deploy snapshot
-        run: mvn -ntp clean deploy -P release
+        run: mvn -Dmaven.test.skip=true -ntp -B clean deploy -P release
         env:
           SONATYPE_USERNAME: ${{ secrets.SONATYPE_USERNAME }}
           SONATYPE_PASSWORD: ${{ secrets.SONATYPE_PASSWORD }}
-          GPG_PRIVATE_KEY: ${{ secrets.GPG_PRIVATE_KEY }}
-          GPG_PASSPHRASE: ${{ secrets.GPG_PASSPHRASE }}
+          MAVEN_GPG_PASSPHRASE: ${{ secrets.GPG_PASSPHRASE }}