extract functionality for building CMD and ENTRYPOINT

buildfile.go

func (b *buildFile) BuildCmdFromJson(args string) []string {
	var cmd []string
	if err := json.Unmarshal([]byte(args), &cmd); err != nil {
		utils.Debugf("Error unmarhsalling: %s, setting %s to /bin/sh -c", err)
		cmd = []string{"/bin/sh", "-c", args}
	}
	return cmd
}

func (b *buildFile) CmdCmd(args string) error {
	cmd := b.BuildCmdFromJson(args)
	if err := b.commit("", cmd, fmt.Sprintf("CMD %v", cmd)); err != nil {
		return err
	}
	b.config.Cmd = cmd
	return nil
}

func (b *buildFile) CmdEntrypoint(args string) error {
	entrypoint := b.BuildCmdFromJson(args)
	if err := b.commit("", entrypoint, fmt.Sprintf("ENTRYPOINT %v", entrypoint)); err != nil {
		return err
	}
	b.config.Entrypoint = entrypoint
	return nil
}