docker/swarmkit

package flagparser

import (
    gogotypes "github.com/gogo/protobuf/types"
    "github.com/moby/swarmkit/v2/api"
    "github.com/spf13/pflag"
)

func parseContainer(flags *pflag.FlagSet, spec *api.ServiceSpec) error {
    if flags.Changed("image") {
        image, err := flags.GetString("image")
        if err != nil {
            return err
        }
        spec.Task.GetContainer().Image = image
    }

    if flags.Changed("hostname") {
        hostname, err := flags.GetString("hostname")
        if err != nil {
            return err
        }
        spec.Task.GetContainer().Hostname = hostname
    }

    if flags.Changed("command") {
        command, err := flags.GetStringSlice("command")
        if err != nil {
            return err
        }
        spec.Task.GetContainer().Command = command
    }

    if flags.Changed("args") {
        args, err := flags.GetStringSlice("args")
        if err != nil {
            return err
        }
        spec.Task.GetContainer().Args = args
    }

    if flags.Changed("env") {
        env, err := flags.GetStringSlice("env")
        if err != nil {
            return err
        }
        spec.Task.GetContainer().Env = env
    }

    if flags.Changed("tty") {
        tty, err := flags.GetBool("tty")
        if err != nil {
            return err
        }

        spec.Task.GetContainer().TTY = tty
    }

    if flags.Changed("open-stdin") {
        openStdin, err := flags.GetBool("open-stdin")
        if err != nil {
            return err
        }

        spec.Task.GetContainer().OpenStdin = openStdin
    }

    if flags.Changed("init") {
        init, err := flags.GetBool("init")
        if err != nil {
            return err
        }

        spec.Task.GetContainer().Init = &gogotypes.BoolValue{
            Value: init,
        }
    }

    if flags.Changed("oom-score-adj") {

        oomScoreAdj, err := flags.GetInt64("oom-score-adj")
        if err != nil {
            return err
        }

        spec.Task.GetContainer().OomScoreAdj = oomScoreAdj
    }

    return nil
}