Refactor existing environment variables in standalone image to prevent accidental changes to crucial configuration options

Author: codedmonkey

docker/config.yaml

@@ -5,5 +5,14 @@ parameters:
 framework:
   secret: '%kernel_secret%'
 
+  messenger:
+    transports:
+      async:
+        dsn: 'doctrine://default?auto_setup=0'
+
   trusted_proxies: '%env(TRUSTED_PROXIES)%'
   trusted_headers: ['x-forwarded-for', 'x-forwarded-host', 'x-forwarded-port', 'x-forwarded-prefix', 'x-forwarded-proto']
+
+doctrine:
+  dbal:
+    url: 'postgresql://dirigent@127.0.0.1:5432/dirigent?serverVersion=16&charset=utf8'

docker/env.php

@@ -2,13 +2,12 @@
 
 return [
     'APP_ENV' => 'prod',
-    'DATABASE_URL' => 'postgresql://dirigent@127.0.0.1:5432/dirigent?serverVersion=16&charset=utf8',
     'DIRIGENT_IMAGE' => '1',
+    'SYMFONY_DOTENV_PATH' => './.env.dirigent',
+
     'GITHUB_TOKEN' => '',
     'KERNEL_SECRET_FILE' => '/srv/config/secrets/kernel_secret',
     'MAILER_DSN' => 'null://null',
-    'MESSENGER_TRANSPORT_DSN' => 'doctrine://default?auto_setup=0',
     'SENTRY_DSN' => '',
-    'SYMFONY_DOTENV_PATH' => './.env.dirigent',
     'TRUSTED_PROXIES' => '',
 ];

docs/installation/docker-standalone.md

@@ -65,6 +65,16 @@ dirigent:
 
 For a complete list of configuration options, see the [Configuration Reference][docs-configuration-reference].
 
+### Environment variables
+
+- `DECRYPTION_KEY` / `DECRYPTION_KEY_FILE`
+- `ENCRYPTION_KEY` / `ENCRYPTION_KEY_FILE`
+- `GITHUB_TOKEN`
+- `KERNEL_SECRET` / `KERNEL_SECRET_FILE`
+- `MAILER_DSN`
+- `SENTRY_DSN`
+- `TRUSTED_PROXIES`
+
 ## Running the image
 
 After following the steps above you're ready to boot the image, so run the Docker command to start your