Updated Portainer config

portainer/docker-compose.yml

@@ -1,12 +1,17 @@
-version: '3.5'
+version: '2.4'
 
 services:
     app:
-        image: 'portainer/portainer-ce:latest'
+        image: 'portainer/portainer-ce:2.1.1-alpine'
         restart: 'always'
 
-        labels:
-            - 'com.centurylinklabs.watchtower.enable=true'
+        healthcheck:
+            test: 'curl -f localhost:9000 || exit 1'
+            interval: '1m'
+            timeout: '10s'
+            retries: 3
+            start_period: '10s'
+
         networks:
             - 'nginx'
         ports:
@@ -17,8 +22,7 @@ services:
 
 networks:
     nginx:
-        external:
-            name: 'nginx'
+        external: true
 
 volumes:
     data: