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commit.go
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commit.go
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package container
import (
"fmt"
"golang.org/x/net/context"
"github.com/docker/docker/api/types"
"github.com/docker/docker/cli"
"github.com/docker/docker/cli/command"
dockeropts "github.com/docker/docker/opts"
"github.com/spf13/cobra"
)
type commitOptions struct {
container string
reference string
pause bool
comment string
author string
changes dockeropts.ListOpts
}
// NewCommitCommand creates a new cobra.Command for `docker commit`
func NewCommitCommand(dockerCli *command.DockerCli) *cobra.Command {
var opts commitOptions
cmd := &cobra.Command{
Use: "commit [OPTIONS] CONTAINER [REPOSITORY[:TAG]]",
Short: "Create a new image from a container's changes",
Args: cli.RequiresRangeArgs(1, 2),
RunE: func(cmd *cobra.Command, args []string) error {
opts.container = args[0]
if len(args) > 1 {
opts.reference = args[1]
}
return runCommit(dockerCli, &opts)
},
}
flags := cmd.Flags()
flags.SetInterspersed(false)
flags.BoolVarP(&opts.pause, "pause", "p", true, "Pause container during commit")
flags.StringVarP(&opts.comment, "message", "m", "", "Commit message")
flags.StringVarP(&opts.author, "author", "a", "", "Author (e.g., \"John Hannibal Smith <hannibal@a-team.com>\")")
opts.changes = dockeropts.NewListOpts(nil)
flags.VarP(&opts.changes, "change", "c", "Apply Dockerfile instruction to the created image")
return cmd
}
func runCommit(dockerCli *command.DockerCli, opts *commitOptions) error {
ctx := context.Background()
name := opts.container
reference := opts.reference
options := types.ContainerCommitOptions{
Reference: reference,
Comment: opts.comment,
Author: opts.author,
Changes: opts.changes.GetAll(),
Pause: opts.pause,
}
response, err := dockerCli.Client().ContainerCommit(ctx, name, options)
if err != nil {
return err
}
fmt.Fprintln(dockerCli.Out(), response.ID)
return nil
}