put database name in compose file + fix issue in password management in README

bag/README.md

@@ -4,11 +4,11 @@ https://wallabag.org
 
 ## Configure
 ```
-echo POSTGRES_PASSWORD=$(openssl rand -base64 32) >> .env
+export DB_PASSWORD=$(openssl rand -base64 32)
+echo POSTGRES_PASSWORD=$DB_PASSWORD >> .env
 echo POSTGRES_USER=wallabag >> .env
-echo SYMFONY__ENV__DATABASE_NAME=wallabag >> .env
 echo SYMFONY__ENV__DATABASE_USER=wallabag >> .env
-echo SYMFONY__ENV__DATABASE_PASSWORD=$(openssl rand -base64 32) >> .env
+echo SYMFONY__ENV__DATABASE_PASSWORD=$DB_PASSWORD >> .env
 echo SYMFONY__ENV__MAILER_HOST=changeme >> .env
 echo SYMFONY__ENV__MAILER_USER=changeme >> .env
 echo SYMFONY__ENV__FROM_EMAIL=changeme >> .env

bag/docker-compose.yml

@@ -13,6 +13,7 @@ services:
       - SYMFONY__ENV__DATABASE_DRIVER_CLASS=Wallabag\CoreBundle\Doctrine\DBAL\Driver\CustomPostgreSQLDriver
       - SYMFONY__ENV__DATABASE_HOST=db
       - SYMFONY__ENV__DATABASE_PORT=5432
+      - SYMFONY__ENV__DATABASE_NAME=wallabag
       - SYMFONY__ENV__DOMAIN_NAME=http://bag.${CHATONS_DOMAIN:-localhost}
     env_file:
       - .env