// RUN some command yo // // run a command and commit the image. Args are automatically prepended with // 'sh -c' under linux or 'cmd /S /C' under Windows, in the event there is // only one argument. The difference in processing: // // RUN echo hi # sh -c echo hi (Linux) // RUN echo hi # cmd /S /C echo hi (Windows) // RUN [ "echo", "hi" ] # echo hi // func run(b *Builder, args []string, attributes map[string]bool, original string) error { if b.image == "" && !b.noBaseImage { return fmt.Errorf("Please provide a source image with `from` prior to run") } if err := b.BuilderFlags.Parse(); err != nil { return err } args = handleJsonArgs(args, attributes) if !attributes["json"] { if runtime.GOOS != "windows" { args = append([]string{"/bin/sh", "-c"}, args...) } else { args = append([]string{"cmd", "/S /C"}, args...) } } runCmd := flag.NewFlagSet("run", flag.ContinueOnError) runCmd.SetOutput(ioutil.Discard) runCmd.Usage = nil config, _, _, err := runconfig.Parse(runCmd, append([]string{b.image}, args...)) if err != nil { return err } cmd := b.Config.Cmd // set Cmd manually, this is special case only for Dockerfiles b.Config.Cmd = config.Cmd runconfig.Merge(b.Config, config) defer func(cmd *runconfig.Command) { b.Config.Cmd = cmd }(cmd) glog.V(1).Infof("[BUILDER] Command to be executed: %v", b.Config.Cmd) hit, err := b.probeCache() if err != nil { return err } if hit { return nil } c, err := b.create() if err != nil { return err } err = b.run(c) if err != nil { return err } if err := b.commit(c.ID, cmd, "run"); err != nil { return err } return nil }
func parseRun(args []string) (*Config, *HostConfig, *flag.FlagSet, error) { cmd := flag.NewFlagSet("run", flag.ContinueOnError) cmd.SetOutput(ioutil.Discard) cmd.Usage = nil return Parse(cmd, args) }