Docker Compose v3.6 for Swarm & Kubernetes - Issue

gistfile1.txt

[Captains-Bay]🚩 >  cat docker-compose.yml
version: '3.6'
services:
  web1:
    image: nginx:alpine
    ports:
      - 8085:80
  db1:
    image: nginx:alpine


[Captains-Bay]🚩 >  docker version
Client:
 Version:      18.05.0-ce
 API version:  1.37
 Go version:   go1.9.5
 Git commit:   f150324
 Built:        Wed May  9 22:12:05 2018
 OS/Arch:      darwin/amd64
 Experimental: true
 Orchestrator: swarm

Server:
 Engine:
  Version:      18.05.0-ce
  API version:  1.37 (minimum version 1.12)
  Go version:   go1.10.1
  Git commit:   f150324
  Built:        Wed May  9 22:20:16 2018
  OS/Arch:      linux/amd64
  Experimental: true
  
[Captains-Bay]🚩 >  docker stack deploy -c docker-compose.yml mytry
Creating network mytry_default
Creating service mytry_db1
Creating service mytry_web1
[Captains-Bay]🚩 >  docker service ls
ID                  NAME                MODE                REPLICAS            IMAGE               PORTS
ualf5i0le078        mytry_db1           replicated          0/1                 nginx:alpine
i5l3adg46ioi        mytry_web1          replicated          0/1                 nginx:alpine        *:8084->80/tcp
[Captains-Bay]🚩 >  clear

[Captains-Bay]🚩 >  docker version
Client:
 Version:      18.05.0-ce
 API version:  1.37
 Go version:   go1.9.5
 Git commit:   f150324
 Built:        Wed May  9 22:12:05 2018
 OS/Arch:      darwin/amd64
 Experimental: true
 Orchestrator: kubernetes

Server:
 Engine:
  Version:      18.05.0-ce
  API version:  1.37 (minimum version 1.12)
  Go version:   go1.10.1
  Git commit:   f150324
  Built:        Wed May  9 22:20:16 2018
  OS/Arch:      linux/amd64
  Experimental: true
 Kubernetes:
  Version:     v1.10.3
  StackAPI:                   v1beta1
[Captains-Bay]🚩 >


[Captains-Bay]🚩 >  docker stack deploy -c docker-compose.yml myapp10
Stack.compose.docker.com "myapp10" is invalid: myapp10: Invalid value: "null": parsing error: unsupported Compose file version: 3.6