fix(docker): use docker --version instead of docker version

`docker version` subcommand is able to return both docker client and
docker daemon information.  To get a daemon version, it connects to a
possibly remote daemon.  If the remote daemon is not accessible, the
client waits for some time, until it gets interrupted by timeout.

As a result we can have a docker client running in background. When zsh
session is rather short, a terminal application (iTerm2) starts asking
if that background docker process should be stopped.

On the other hand, to get a docker client version only, we can use
`docker --version` instead. It does not connect to a daemon.

Closes #11780
This commit is contained in:
Andrei Polushin 2023-06-29 13:25:41 +02:00 committed by Carlo Sala
parent 723af07a56
commit 73c4764e78
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@ -37,8 +37,10 @@ if (( ! $+commands[docker] )); then
fi
{
# docker version returns `Docker version 24.0.2, build cb74dfcd85`
# with `s:,:` remove the comma after the version, and select third word of it
local _docker_version=${${(s:,:z)"$(command docker --version)"}[3]}
# `docker completion` is only available from 23.0.0 on
local _docker_version=$(command docker version --format '{{.Client.Version}}' 2>/dev/null)
if is-at-least 23.0.0 $_docker_version; then
# If the completion file doesn't exist yet, we need to autoload it and
# bind it to `docker`. Otherwise, compinit will have already done that.