Function dockerdArgs

cli/docker.go:849–882

nolint:revive

(link, cidr string, isNoSpace bool)

//nolint:revive
func dockerdArgs(link, cidr string, isNoSpace bool) ([]string, error) {
	// We need to adjust the MTU for the host otherwise packets will fail delivery.
	// 1500 is the standard, but certain deployments (like GKE) use custom MTU values.
	// See: https://www.atlantis-press.com/journals/ijndc/125936177/view#sec-s3.1

	mtu, err := xunix.NetlinkMTU(link)
	if err != nil {
		return nil, xerrors.Errorf("custom mtu: %w", err)
	}

	// We set the Docker Bridge IP explicitly here for a number of reasons:
	// 1) It sometimes picks the 172.17.x.x address which conflicts with that of the Docker daemon in the inner container.
	// 2) It defaults to a /16 network which is way more than we need for envbox.
	// 3) The default may conflict with existing internal network resources, and an operator may wish to override it.
	dockerBip, prefixLen := dockerutil.BridgeIPFromCIDR(cidr)

	args := []string{
		"--debug",
		"--log-level=debug",
		fmt.Sprintf("--mtu=%d", mtu),
		"--userns-remap=coder",
		"--storage-driver=overlay2",
		fmt.Sprintf("--bip=%s/%d", dockerBip, prefixLen),
	}

	if isNoSpace {
		args = append(args,
			fmt.Sprintf("--data-root=%s", noSpaceDataDir),
			fmt.Sprintf("--storage-driver=%s", noSpaceDockerDriver),
		)
	}

	return args, nil
}

// TODO This is bad code.
func filterElements(ss []string, filters ...string) []string {