56 lines
1.3 KiB
Go
56 lines
1.3 KiB
Go
package client
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import (
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"errors"
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"net/url"
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"github.com/docker/distribution/reference"
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Cli "github.com/docker/docker/cli"
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flag "github.com/docker/docker/pkg/mflag"
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"github.com/docker/docker/registry"
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)
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// CmdTag tags an image into a repository.
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//
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// Usage: docker tag [OPTIONS] IMAGE[:TAG] [REGISTRYHOST/][USERNAME/]NAME[:TAG]
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func (cli *DockerCli) CmdTag(args ...string) error {
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cmd := Cli.Subcmd("tag", []string{"IMAGE[:TAG] [REGISTRYHOST/][USERNAME/]NAME[:TAG]"}, Cli.DockerCommands["tag"].Description, true)
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force := cmd.Bool([]string{"f", "-force"}, false, "Force the tagging even if there's a conflict")
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cmd.Require(flag.Exact, 2)
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cmd.ParseFlags(args, true)
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v := url.Values{}
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ref, err := reference.ParseNamed(cmd.Arg(1))
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if err != nil {
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return err
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}
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_, isDigested := ref.(reference.Digested)
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if isDigested {
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return errors.New("refusing to create a tag with a digest reference")
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}
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tag := ""
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tagged, isTagged := ref.(reference.Tagged)
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if isTagged {
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tag = tagged.Tag()
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}
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//Check if the given image name can be resolved
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if err := registry.ValidateRepositoryName(ref); err != nil {
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return err
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}
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v.Set("repo", ref.Name())
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v.Set("tag", tag)
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if *force {
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v.Set("force", "1")
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}
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if _, _, err := readBody(cli.call("POST", "/images/"+cmd.Arg(0)+"/tag?"+v.Encode(), nil, nil)); err != nil {
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return err
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}
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return nil
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}
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