Updating docker compose for watchtower

Author: DitchTurtL

docker-compose.yaml

@@ -4,4 +4,16 @@ services:
     image: ghcr.io/opensource-force/osf-site:latest
     restart: always
     ports:
-      - 9090:3000
+      - 9090:3000
+    labels:
+      - "com.centurylinklabs.watchtower.enable=true"
+  watchtower:
+    container_name: watchtower
+    image: containrrr/watchtower
+    restart: always
+    volumes:
+      - /var/run/docker.sock:/var/run/docker.sock
+    environment:
+      - WATCHTOWER_INTERVAL=21600 # Check every 6 hours (in seconds)
+      - WATCHTOWER_CLEANUP=true   # Remove old images to save disk space
+      - WATCHTOWER_LABEL_ENABLE=true # Only watch containers with the watchtower label