docker: fix context command

[crazy-max]

Related to https://github.com/docker/setup-buildx-action/actions/runs/4270612172/jobs/7434517458#step:4:13

Looks like docker context show is only available since Docker 23: docker/cli#3567.

What's odd is the command exists on Docker Desktop with Docker CLI 20.10.22 ??

$ docker --version
Docker version 20.10.22, build 3a2c30b
$ docker context --help
Manage contexts
Usage:
docker context [command]
Available Commands:
create Create new context
export Export a context to a tar or kubeconfig file
import Import a context from a tar or zip file
inspect Display detailed information on one or more contexts
list List available contexts
rm Remove one or more contexts
show Print the current context
update Update a context
use Set the default context
Flags:
-h, --help Help for context
Use "docker context [command] --help" for more information about a command.

Do you have an idea why @thaJeztah? Maybe compose-cli handles it?

[thaJeztah]

What's odd is the command exists on Docker Desktop with Docker CLI 20.10.22 ??

Yeah, it was one of the things added in "compose-cli", which is wrapping the actual cli on desktop 😔
There's other things as well that work slightly different in that case