added documentation

docker/docker-compose.yaml

@@ -0,0 +1,50 @@
+version: '2'
+services:
+  db:
+    image: mariadb:10.5
+    restart: always
+    command: --transaction-isolation=READ-COMMITTED --binlog-format=ROW
+    volumes:
+      - db:/var/lib/mysql
+    environment:
+      - MYSQL_ROOT_PASSWORD=${MYSQL_ROOT_PASSWORD}
+      - MYSQL_PASSWORD=${MYSQL_PASSWORD}
+      - MYSQL_DATABASE=${MYSQL_DATABASE}
+      - MYSQL_USER=${MYSQL_USER}
+  app:
+    image: nextcloud-smbclient:latest
+    restart: always
+    ports:
+      - ${APP_PORT}:80
+    links:
+      - db
+    volumes:
+      - html:/var/www/html
+    environment:
+      - MYSQL_PASSWORD=${MYSQL_PASSWORD}
+      - MYSQL_DATABASE=${MYSQL_DATABASE}
+      - MYSQL_USER=${MYSQL_USER}
+      - MYSQL_HOST=${MYSQL_HOST}
+      - PHP_MEMORY_LIMIT=2048M
+  duplicati:
+    image: duplicati-sqlclient:latest
+    environment:
+      - DB_HOST=${MYSQL_HOST}
+      - DB_NAME=${MYSQL_DATABASE}
+      - DB_USER=${MYSQL_USER}
+      - DB_PASSWORD=${MYSQL_PASSWORD}
+      - DB_BACKUP_TARGETFOLDER=${DB_BACKUP_TARGETFOLDER}
+    volumes:
+      - duplicati_data:/data
+      - db:/backup/db_data:ro
+      - html:/backup/app_data:ro
+      - duplicati_data:/backup/duplicati_data:ro
+      - db-dumps:${DB_BACKUP_TARGETFOLDER}
+    ports:
+      - ${DUPLICATI_PORT}:8200
+    restart: unless-stopped
+volumes:
+   html:
+   db:
+   duplicati_data:
+   db-dumps: