making fixes per rawmind0's suggestions

templates/cowcheck/0/docker-compose.yml

@@ -11,7 +11,6 @@ services:
     stdin_open: true
     tty: true
     ports:
-    - 5050:5050/tcp
+    - ${PUBLISH_PORT}:5050/tcp
     labels:
-      io.rancher.container.pull_image: always
       io.rancher.scheduler.global: 'true'

templates/cowcheck/0/rancher-compose.yml

@@ -30,6 +30,11 @@ catalog:
       description: | Version of the Docker API to use (storage checks only)
       type: string
       default: 1.24
+    - variable: PUBLISH_PORT
+      label: PUBLISH_PORT
+      description: | Port to publish the service.
+      type: int
+      default: 5050
 services:
   cowcheck:
     start_on_create: true