adding the coder stack file

docker-stack/traefik.yml

@@ -17,6 +17,7 @@ services:
       - DS_SERVICE_NAME={{.Service.Name}}
       - DS_TASK_NAME={{.Task.Name}}
     volumes:
+      # direct binding is ok for the constraints 'node.role == manager' below
       - type: bind
         source: /var/run/docker.sock
         target: /var/run/docker.sock
@@ -44,7 +45,8 @@ services:
     deploy:
       mode: global
       placement:
-        constraints: [node.role == manager]
+        constraints:
+          - node.role == manager
     command:
       - --log.level=INFO
       - --accessLog