Working with docker secrets

docker-compose.yml

@@ -17,8 +17,10 @@ services:
 
       # necessary Postgres options/variables
       - POSTGRES_USER=mattermost
-      - POSTGRES_PASSWORD=mysupersecretpassword
+      - POSTGRES_PASSWORD_FILE=/run/secrets/postgres_password
       - POSTGRES_DB=mattermost
+    secrets:
+      - postgres_password
     networks:
       - internal
 
@@ -42,7 +44,6 @@ services:
 
       # necessary Mattermost options/variables (see env.sample)
       - MM_SQLSETTINGS_DRIVERNAME=postgres
-#      - MM_SQLSETTINGS_DATASOURCE=postgres://${POSTGRES_USER}:${POSTGRES_PASSWORD}@postgres:5432/${POSTGRES_DB}?sslmode=disable&connect_timeout=10
 
       # additional settings
       - MM_SERVICESETTINGS_SITEURL=https://${DOMAIN}