added Portainer stack definition.

stack.yml

@@ -0,0 +1,18 @@
+additionalFiles:
+autoUpdate:
+  forcePullImage: false
+  forceUpdate: false
+  interval: 1m30s
+  webhook: 05de31a2-79fa-4644-9c12-faa67e5c49f0
+composeFile: docker-compose.yml
+env:
+  - name: name
+    value: value
+fromAppTemplate: false
+name: myStack
+repositoryAuthentication: true
+repositoryGitCredentialID: 10
+repositoryPassword: 
+repositoryReferenceName: refs/heads/master
+repositoryURL: http://192.168.36.19:3000/fred
+repositoryUsername: thomas