added documentation

docker/docker-compose.yaml

@@ -1,5 +1,4 @@
 version: '2'
-
 services:
   db:
     image: mariadb:10.5
@@ -35,7 +34,7 @@ services:
       - DB_USER=${MYSQL_USER}
       - DB_PASSWORD=${MYSQL_PASSWORD}
       - DB_BACKUP_TARGETFOLDER=${DB_BACKUP_TARGETFOLDER}
-    volumes: 
+    volumes:
       - duplicati_data:/data
       - db:/backup/db_data:ro
       - html:/backup/app_data:ro
@@ -49,5 +48,3 @@ volumes:
    db:
    duplicati_data:
    db-dumps:
-
-