add DB_HOST and change

docker-compose.yml

@@ -37,7 +37,7 @@ services:
       - /var/lib/docker/volumes/nextcloud/db:/var/lib/mysql:rw
       - /var/lib/docker/volumes/nextcloud/db:/etc/mysql/conf.d:rw
     environment:
-      - DB_HOST=mariadb
+      - DB_HOST=Nextcloud-DB
       - MYSQL_ROOT_PASSWORD=C@ptn&mo
       - MYSQL_PASSWORD=C@ptn&mo
       - MYSQL_DATABASE=nextcloud
@@ -81,7 +81,7 @@ services:
       - MYSQL_PASSWORD=C@ptn&mo
       - MYSQL_DATABASE=nextcloud
       - MYSQL_USER=nextcloud
-      - MYSQL_HOST=mariadb
+      - MYSQL_HOST=Nextcloud-DB
     healthcheck:
       test: curl -f http://localhost:80/ || exit 1
     volumes: