// 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)
}