Update docker-compose.yml

Fix filename extension

docker-compose.yml

@@ -0,0 +1,37 @@
+version: '3.8'
+
+services:
+  cc-mysql:
+    image: mariadb:10.11
+    restart: unless-stopped
+    environment:
+      MYSQL_ROOT_PASSWORD: ${MYSQL_ROOT_PASSWORD}
+      MYSQL_DATABASE: ${MYSQL_DATABASE}
+      MYSQL_USER: ${MYSQL_USER}
+      MYSQL_PASSWORD: ${MYSQL_PASSWORD}
+    volumes:
+      = cc-mysql-data:/var/lib/mysql
+
+  cc:
+    image: severalnines/clustercontrol:latest
+    restart: unless-stopped
+    depends_on:
+      - cc-mysql
+    environment:
+      - DB_HOST=cc-mysql
+      - DB_PORT=3306
+      - DB_USER=${MYSQL_USER}
+      - DB_PASSWORD=${MYSQL_PASSWORD}
+      - DB_ROOT_PASSWORD=${MYSQL_ROOT_PASSWORD}
+    volumes:
+      - cc-data:/var/lib/cmon
+      - cc-ssh-keys:/root/.ssh
+    # Exposing standard UI ports internally for Traefik routing
+    #expose:
+    #  - "80"
+    #  - "443"
+
+volumes:
+  cc-mysql-data:
+  cc-data:
+  cc-ssh-keys: