docker-compose v3.9 not supported

[danielvandenberg95]

Bug description
Can't make stacks with docker-compose version 3.9 (engine 20.10.0) through portainer, can through command line.

Expected behavior
Expected portainer to work the same as underlying system

Portainer Logs

level=info msg="2021/12/29 15:17:00 http error: unsupported Compose file version: 3.9"
level=info msg=" (err=unsupported Compose file version: 3.9"
level=info msg=") (code=500)"

Steps to reproduce the issue:

Ensure docker version 20.10 or higher is running.
Create stack through portainer with:

version: '3.9'
services:
  openvpn:
    cap_add:
     - NET_ADMIN
    image: elswork/openvpn
    ports:
     - "1194:1194/udp"
    restart: always
    volumes:
     - /mnt/gv0/openvpn-data/:/etc/openvpn

get error
create same with docker stack deploy openvpn -c docker-compose.yml
works

Technical details:

• Portainer version: 2.11.0
• Docker version (managed by Portainer): 20.10.10
• Kubernetes version (managed by Portainer): -
• Platform (windows/linux): linux
• Command used to start Portainer (docker run -p 9443:9443 portainer/portainer): stack deploy
• Browser: Brave
• Use Case (delete as appropriate): Using Portainer at Home.
• Have you reviewed our technical documentation and knowledge base? Yes

[huib-portainer]

We'd have to update the docker version we bundle in the Portainer image: #5779 (comment)

[ShuiPingZhiLian]

We'd have to update the docker version we bundle in the Portainer image: #5779 (comment)

May I ask when the new docker will be ready since I am also waiting for this new feature.

[allFunAndGames]

docker-compose version 3.9 has been the pinned default schema since 1.27.1, released on 2020-09-10. Is there a plan to incorporate this updated schema in the portainer image, a timeline?

thansk & BR

[huib-portainer]

You can give it a try by using the image portainerci/portainer:pr6994.
Note that this is a development build and should not be used in a production environment.

[allFunAndGames]

great, thanks a million, I'll give it a go