I was working with my docker image for my pet project and suddenly got an error message:

I just opened a command line and typed:

$ docker version

And guess what? this is the output:

Client:
  Version:      1.13.0-rc7
  API version:  1.25
  Go version:   go1.7.3
  Git commit:   48a9e53
  Built:        Tue Feb 14 17:56:00 UTC 2017
  OS/Arch:      linux/amd64

Server:
  Version:      1.13.0-rc7
  API version:  1.25 (minimum version 1.24)
  Go version:   go1.7.3
  Git commit:   48a9e53
  Built:        Tue Feb 14 17:56:00 UTC 2017
  OS/Arch:      linux/amd64</pre>

Turns out my current version is higher than the error version, so what is going on here.

The catch is the docker-compose file format has been versioned and therefore we should increment the version requested in the docker.yml file.

In any docker-compose file that is used with 1.24 or later version of the docker client, we should request version 2.1.

So change your file to look like this and you should be good to go:

version: '2.1'

  services:
    webapplication102:
      image: user/myapplication
      build:
        context: .

Here is the issue page on github if you need more info.

Update:

Version 3 is released, which means you should be able to put 3 instead of 2.1 in your docker-compose.yml file.