func (i *Image) Remove() error {
exitCode := cmd.ExitCode("docker", "rmi", fmt.Sprintf("%s:%s", i.Name, i.Tag))
if exitCode == 0 {
return nil
}
return fmt.Errorf("exit code %d", exitCode)
}
func RequireDaemon() {
if c := cmd.ExitCode("docker", "ps"); c != 0 {
cli.Logf("`docker ps` exited with code %d", c)
if dockermachine.Installed() {
vms := dockermachine.RunningVMs()
if len(vms) != 0 {
cli.Fatalf(`Tip: eval "$(docker-machine env %s)"`, vms[0])
}
vms = dockermachine.VMs()
switch len(vms) {
case 0:
cli.Logf("Tip: you should create a machine using docker-machine")
case 1:
start := ""
if cmd.Stdout("docker-machine", "status", vms[0]) != "Running" {
start = fmt.Sprintf("docker-machine start %s && ", vms[0])
}
cli.Logf(`Tip: %seval "$(docker-machine env %s)"`, start, vms[0])
default:
cli.Logf("Tip: start one of your docker machines (%s)",
strings.Join(vms, ", "))
}
}
cli.Fatal()
}
}
func IndexIsDirty() bool {
code := cmd.ExitCode("git", "diff-index", "--quiet", "HEAD")
if code > 1 || code < 0 {
cli.Fatalf("Unable to determine if git index is dirty; Got exit code %d; want 0-1")
}
return code == 1
}
func RequireVersion(r *version.R) {
if c := cmd.ExitCode("git", "--version"); c != 0 {
cli.Fatalf("git required")
}
v := version.Version(cmd.Table("git", "--version")[0][2])
if !r.IsSatisfiedBy(v) {
cli.Fatalf("you have git version %s; want %s", v, r.Original)
}
}
func (c *container) Inspect() (*DockerContainer, bool) {
if cmd.ExitCode("docker", "inspect", c.effectiveName()) != 0 {
return nil, false
}
var dc []*DockerContainer
cmd.JSON(&dc, "docker", "inspect", c.effectiveName())
if len(dc) == 0 {
return nil, false
}
if len(dc) != 1 {
cli.Fatalf("Docker inspect %s returned more than one result, please open a GitHub issue about this",
c.effectiveName())
}
// The seond return value checks that the thing we inspected was, in fact, the
// relevant container, since docker inpect takes both container and image
// names and IDs, so it's a bit ambiguous otherwise.
cont := dc[0]
return cont, cont.Name == "/"+c.Name() || cont.ID == c.CID()
}
func (c *container) Wait() error {
if ex := cmd.ExitCode("docker", "wait", c.effectiveName()); ex != 0 {
return fmt.Errorf("Unable to wait on docker container %s", c)
}
return nil
}
func (c *container) Start() error {
if ex := cmd.ExitCode("docker", "start", c.effectiveName()); ex != 0 {
return fmt.Errorf("Unable to start docker container %s", c)
}
return nil
}
func (c *container) ForceRemove() error {
if ex := cmd.ExitCode("docker", "rm", "-f", c.effectiveName()); ex != 0 {
return fmt.Errorf("Unable to remove docker container %s", c)
}
return nil
}
func (c *container) Kill() error {
if ex := cmd.ExitCode("docker", "kill", c.effectiveName()); ex != 0 {
return fmt.Errorf("Unable to kill docker container %s", c)
}
return nil
}
func Commit(cid, tag string) error {
if code := cmd.ExitCode("docker", "commit", cid, tag); code != 0 {
return fmt.Errorf("Command failed with exit code %d", code)
}
return nil
}
func Installed() bool {
return cmd.ExitCode("docker-machine") == 0
}