While trying to use the restart policy “*unless-stopped*”, I got the following message:

FATA[0000] unsupported restart policy "unless-stopped", supported policies are: []

Doing some investigation at nerdctl code, I found this lines at checkRestartCapabilities:

res, err := client.IntrospectionService().Plugins(ctx, []string{"id==restart"})
	if err != nil {
		return false, err
	}
	if len(res.Plugins) == 0 {
		return false, fmt.Errorf("no restart plugin found")
	}
	restartPlugin := res.Plugins[0]
	capabilities := restartPlugin.Capabilities
	if len(capabilities) == 0 {
		capabilities = []string{"always"}
	}
	if !strutil.InStringSlice(capabilities, policySlice[0]) {
		return false, fmt.Errorf("unsupported restart policy %q, supported policies are: %q", policySlice[0], restartPlugin.Capabilities)
	}

It seems it could’t find the policies available from containerd so it set default to “always” only, which is the only one working here. After some research, I came across this command to list containerd plugins:

ctr plugins ls

So I tried:

❯ rdctl shell ctr plugins ls
qemu-x86_64: Could not open '/lib64/ld-linux-x86-64.so.2': No such file or directory
Error: exit status 255

Is this a containerd problem, or rancher-desktop? Maybe because of M1 architecture. @fast-garage-66093 maybe you have a clue about it. Thanks!

Could you file a Github issue for this? Today is a holiday here in BC, and I already have a fully booked rest of the week, so I might not get around to it quickly. Otherwise it might just get lost here in Slack history...

Sure @fast-garage-66093, Thanks!

Thanks you!