Add a DSN example for psql

doctrine/doctrine-bundle/1.6/config/packages/doctrine.yaml

@@ -1,8 +1,12 @@
 doctrine:
     dbal:
         # configure these for your database server
-        driver: 'pdo_mysql'
+        # use postgresql for PostgreSQL
+        # use sqlite for SQLite
+        driver: 'mysql'
         server_version: '5.7'
+
+        # only needed for MySQL
         charset: utf8mb4
         default_table_options:
             charset: utf8mb4

doctrine/doctrine-bundle/1.6/manifest.json

@@ -9,7 +9,8 @@
     "env": {
         "#1": "Format described at https://www.doctrine-project.org/projects/doctrine-dbal/en/latest/reference/configuration.html#connecting-using-a-url",
         "#2": "For an SQLite database, use: \"sqlite:///%kernel.project_dir%/var/data.db\"",
-        "#3": "Configure your db driver and server_version in config/packages/doctrine.yaml",
+        "#3": "For a PostgreSQL database, use: \"postgresql://db_user:db_password@127.0.0.1:5432/db_name?serverVersion=11\"",
+        "#4": "IMPORTANT: You MUST also configure your db driver and server_version in config/packages/doctrine.yaml",
         "DATABASE_URL": "mysql://db_user:db_password@127.0.0.1:3306/db_name"
     }
 }