Update docker-compose.yml

apps/mixpost/docker-compose.yml

@@ -1,4 +1,4 @@
-version: "3"
+version: "3.1"
 
 services:
   mixpost:
@@ -6,7 +6,7 @@ services:
     container_name: mixpost
     environment:
       - APP_NAME='Mixpost'
-      - APP_KEY=${MIXPOST_APP_KEY} # Generate a base64 secret here: https://generate-random.org/laravel-key-generator?count=1
+      - APP_KEY=${MIXPOST_APP_KEY} 
       - APP_URL=https://${APP_DOMAIN}
       - DB_HOST=mixpost_mysql
       - DB_DATABASE=mixpost