Docker stack deploy with network host fails yaml validation on docker for windows

[Hermain]

Description

I am trying to deploy a stack with a service using network host because this service needs to do a multicast.

As stated in the docs (https://docs.docker.com/compose/compose-file/#host-or-none) I declared an external netowrk called host and use that network in my service. This works perfectly fine on linux with docker 17.12.0-ce (or 17.12.1-ce or any other version I tested) however on docker for widnows with version 17.12.0 I get:
network "host" is declared as external, but it is not in the right scope: "local" instead of "swarm"

Steps to reproduce the issue:

1. Create a stack with network

networks:
  hostnet:
    external:
      name: host

2. Declare a service using said network:

  example-service:
    image: hello-world
    networks:
      - hostnet

3. deploy the stack

Describe the results you received:
network "host" is declared as external, but it is not in the right scope: "local" instead of "swarm"

Describe the results you expected:
Stack is successfully deployed

Additional information you deem important (e.g. issue happens only occasionally):
When calling docker stack deploy from within a container running 17.10 which has the docker socket mounted the behaviour is as desired.
Output of docker version:

Version:       17.12.0-ce                                                                                               API version:   1.35                                                                                                     Go version:    go1.9.2                                                                                                  Git commit:    c97c6d6                                                                                                  Built: Wed Dec 27 20:05:22 2017                                                                                         OS/Arch:       windows/amd64                                                                                                                                                                                                                   Server:                                                                                                                  Engine:                                                                                                                  Version:      17.12.0-ce                                                                                                API version:  1.35 (minimum version 1.12)                                                                               Go version:   go1.9.2                                                                                                   Git commit:   c97c6d6                                                                                                   Built:        Wed Dec 27 20:12:29 2017                                                                                  OS/Arch:      linux/amd64                                                                                               Experimental: false   

Output of docker info:

Containers: 43                                                                                                           Running: 22                                                                                                             Paused: 0                                                                                                               Stopped: 21                                                                                                            Images: 20                                                                                                              Server Version: 17.12.0-ce                                                                                              Storage Driver: overlay2                                                                                                 Backing Filesystem: extfs                                                                                               Supports d_type: true                                                                                                   Native Overlay Diff: true                                                                                              Logging Driver: json-file                                                                                               Cgroup Driver: cgroupfs                                                                                                 Plugins:                                                                                                                 Volume: local                                                                                                           Network: bridge host macvlan null overlay                                                                               Log: awslogs fluentd gcplogs gelf journald json-file logentries splunk syslog                                          Swarm: active                                                                                                            NodeID: lcayhpu052oheu67v8z4kq5z9                                                                                       Is Manager: true                                                                                                        ClusterID: quho6g21euunnxpkcqc41bpbj                                                                                    Managers: 1                                                                                                             Nodes: 1                                                                                                                Orchestration:                                                                                                           Task History Retention Limit: 5                                                                                        Raft:                                                                                                                    Snapshot Interval: 10000                                                                                                Number of Old Snapshots to Retain: 0                                                                                    Heartbeat Tick: 1                                                                                                       Election Tick: 3                                                                                                       Dispatcher:                                                                                                              Heartbeat Period: 5 seconds                                                                                            CA Configuration:                                                                                                        Expiry Duration: 3 months                                                                                               Force Rotate: 0                                                                                                        Autolock Managers: false                                                                                                Root Rotation In Progress: false                                                                                        Node Address: 192.168.65.3                                                                                              Manager Addresses:                                                                                                       192.168.65.3:2377                                                                                                     Runtimes: runc                                                                                                          Default Runtime: runc                                                                                                   Init Binary: docker-init                                                                                                containerd version: 89623f28b87a6004d4b785663257362d1658a729                                                            runc version: b2567b37d7b75eb4cf325b77297b140ea686ce8f                                                                  init version: 949e6fa                                                                                                   Security Options:                                                                                                        seccomp                                                                                                                  Profile: default                                                                                                      Kernel Version: 4.9.60-linuxkit-aufs                                                                                    Operating System: Docker for Windows                                                                                    OSType: linux                                                                                                           Architecture: x86_64                                                                                                    CPUs: 2                                                                                                                 Total Memory: 1.934GiB                                                                                                  Name: linuxkit-00155d087104                                                                                             ID: YSPZ:2MRF:HAXW:KTZA:WCKX:NSTV:B4G3:CMC2:ZIH6:WA4B:K5DE:TFYL                                                         Docker Root Dir: /var/lib/docker                                                                                        Debug Mode (client): false                                                                                              Debug Mode (server): true                                                                                                File Descriptors: 171                                                                                                   Goroutines: 346                                                                                                         System Time: 2018-03-19T15:15:38.913833Z                                                                                EventsListeners: 16                                                                                                    Registry: https://index.docker.io/v1/                                                                                   Labels:                                                                                                                 Experimental: false                                                                                                     Insecure Registries:                                                                                                     127.0.0.0/8                                                                                                            Live Restore Enabled: false 

[dnephin]

This is because the network name check is being done client side, and the client in this case is windows, so it's not recognizing the host network as a non-user defined network.

cc @vdemeester I believe you noticed this issue recently as well.

[vdemeester]

I believe the following PR (in moby) fixes it moby/moby#36316
It should be in 18.03 GA I think

[Hermain]

This issue is windows specific and does not affect linux with the exact same version. 36316 seems to fix something general though which affects linux too.
I don't know why windows and linux clients behave differently on exactly the same version but this from my point of view is a critical issue. Not only can't I trust that an application on docker for windows will run as well as on native linux, now i can't even be sure that my stack file will be accepted by any system running the same version.

What about labelling it a bug?

[Hermain]

I updated to the new 18.03 GA on windows and still get:
network "host" is declared as external, but it is not in the right scope: "local" instead of "swarm"

[andrey-denisenko]

The same "local" instead of "swarm" ...

Server Version: 18.03.1-ce

[ondrejtomcik]

Any update ?

[strawgate]

This makes it really hard to use docker for windows for testing...

[PacAnimal]

Just bumped into this :(

[christopher-coffin]

This still seems to be an issue

[mason-chase]

I have this issue on Docker version 19.03.5

running:

env $(cat .env |grep ^[A-Z] | xargs) docker stack deploy --compose-file  docker-compose.stack.yaml backend

docker-stack.yaml

version: "3.4"
services:
    api:
        image: 'backend:b64b003'
        networks:
            - private
            - public
        ports:
            - "4443:443"
            - "8088:80"
        environment:
            ASPNETCORE_URLS: 'https://+;http://+'
            ASPNETCORE_HTTPS_PORT: 443
            ASPNETCORE_Kestrel__Certificates__Default__Password: ""
    phpmyadmin:
        #depends_on:
        image: phpmyadmin/phpmyadmin
        restart: always
        networks:
            - private
        ports:
            - '13306:80'
        environment:
            PMA_HOST: localhost
            MYSQL_ROOT_PASSWORD: ${MYSQL_ROOT_PASSWORD}
            PMA_ABSOLUTE_URI: ${PMA_ABSOLUTE_URI}
            PMA_SOCKET: /var/run/mysqld/mysqld.sock
        volumes:
            - /var/run/mysqld/mysqld.sock:/var/run/mysqld/mysqld.sock
            - /var/run/mysqld/mysqld.sock:/tmp/mysqld.sock
volumes:
    backend-api-https-pfx-volume:
    elastic_data:
    kibana_log:
    portainer_data:

networks:
    public:
        driver: overlay
    private:
        driver: bridge