cli/command: deprecate DockerCli.Apply

The Apply method was added when CLI options for constructing the CLI were
rewritten into functional options in [cli@7f207f3]. There was no mention
in the pull request of this method specifically, and this may have been
related to work being done elsewhere on compose-on-kubernetes or the
compose-cli plugin that may have needed options to modify the CLI config
after it was already initialized.

The CLI itself no longer depends on this method since [cli@133279f], and
the only known consumer (docker compose) no longer needs it since [cli@2711800]
and [cli@048e931].

This patch deprecates the method with the intent to remove it in a future
release.

[cli@7f207f3]: 7f207f3f95
[cli@133279f]: 133279fb0d
[cli@2711800]: 2711800430
[cli@048e931]: 048e931b42

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

cli/command/cli.go

@@ -567,6 +567,8 @@ func (cli *DockerCli) initialize() error {
 }
 
 // Apply all the operation on the cli
+//
+// Deprecated: this method is no longer used and will be removed in the next release if there are no remaining users.
 func (cli *DockerCli) Apply(ops ...CLIOption) error {
 	for _, op := range ops {
 		if err := op(cli); err != nil {