Merge pull request #1566 from YuMS/patch-1

Add PostgreSQL related env in docker compose mode

README.md

@@ -150,12 +150,22 @@ _Note for Windows developers:_ Be sure to configure git to correctly handle line
 git clone https://github.com/doccano/doccano.git --config core.autocrlf=input
 ```
 
-Set the superuser account credentials in the `./config/env.example` file:
+Then, create an `.env` file with variables in the following format(see [./config/.env.example](https://github.com/doccano/doccano/blob/master/config/.env.example)):
 
 ```plain
+# platform settings
 ADMIN_USERNAME=admin
 ADMIN_PASSWORD=password
 ADMIN_EMAIL=admin@example.com
+
+# rabbit mq settings
+RABBITMQ_DEFAULT_USER=doccano
+RABBITMQ_DEFAULT_PASS=doccano
+
+# database settings
+POSTGRES_USER=doccano
+POSTGRES_PASSWORD=doccano
+POSTGRES_DB=doccano
 ```
 
 #### Production