Add support for Postgres trust auth method at docker compose

Author: theodorosidmar

spring-boot-project/spring-boot-docker-compose/src/main/java/org/springframework/boot/docker/compose/service/connection/postgres/PostgresEnvironment.java

@@ -17,6 +17,7 @@
 package org.springframework.boot.docker.compose.service.connection.postgres;
 
 import java.util.Map;
+import java.util.Objects;
 
 import org.springframework.util.Assert;
 import org.springframework.util.StringUtils;
@@ -28,6 +29,7 @@
  * @author Andy Wilkinson
  * @author Phillip Webb
  * @author Scott Frederick
+ * @author Sidmar Theodoro
  */
 class PostgresEnvironment {
 
@@ -44,11 +46,19 @@ class PostgresEnvironment {
 	}
 
 	private String extractPassword(Map<String, String> env) {
+		if (hasTrustAuthMethod(env)) {
+			return null;
+		}
 		String password = env.getOrDefault("POSTGRES_PASSWORD", env.get("POSTGRESQL_PASSWORD"));
 		Assert.state(StringUtils.hasLength(password), "PostgreSQL password must be provided");
 		return password;
 	}
 
+	private Boolean hasTrustAuthMethod(Map<String, String> env) {
+		String postgresAuthMethod = env.getOrDefault("POSTGRES_HOST_AUTH_METHOD", "password");
+		return Objects.equals(postgresAuthMethod, "trust");
+	}
+
 	String getUsername() {
 		return this.username;
 	}

spring-boot-project/spring-boot-docker-compose/src/test/java/org/springframework/boot/docker/compose/service/connection/postgres/PostgresEnvironmentTests.java

@@ -78,6 +78,12 @@ void getPasswordWhenHasPostgresqlPassword() {
 		assertThat(environment.getPassword()).isEqualTo("secret");
 	}
 
+	@Test
+	void getPasswordWhenHasTrustAuthMethod() {
+		PostgresEnvironment environment = new PostgresEnvironment(Map.of("POSTGRES_HOST_AUTH_METHOD", "trust"));
+		assertThat(environment.getPassword()).isNull();
+	}
+
 	@Test
 	void getDatabaseWhenNoPostgresDbOrPostgresUser() {
 		PostgresEnvironment environment = new PostgresEnvironment(Map.of("POSTGRES_PASSWORD", "secret"));