// 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 Commit(d *daemon.Daemon, name string, c *daemon.ContainerCommitConfig) (string, error) {
container, err := d.Get(name)
if err != nil {
return "", err
}
if c.Config == nil {
c.Config = &runconfig.Config{}
}
newConfig, err := BuildFromConfig(d, c.Config, c.Changes)
if err != nil {
return "", err
}
if err := runconfig.Merge(newConfig, container.Config); err != nil {
return "", err
}
img, err := d.Commit(container, c.Repo, c.Tag, c.Comment, c.Author, c.Pause, newConfig)
if err != nil {
return "", err
}
return img.ID, nil
}
func (daemon *Daemon) mergeAndVerifyConfig(config *runconfig.Config, img *image.Image) error {
if img != nil && img.Config != nil {
if err := runconfig.Merge(config, img.Config); err != nil {
return err
}
}
if config.Entrypoint.Len() == 0 && config.Cmd.Len() == 0 {
return fmt.Errorf("No command specified")
}
return nil
}
func (s *TagStore) newManifest(localName, remoteName, tag string) ([]byte, error) {
manifest := ®istry.ManifestData{
Name: remoteName,
Tag: tag,
SchemaVersion: 1,
}
localRepo, err := s.Get(localName)
if err != nil {
return nil, err
}
if localRepo == nil {
return nil, fmt.Errorf("Repo does not exist: %s", localName)
}
// Get the top-most layer id which the tag points to
layerId, exists := localRepo[tag]
if !exists {
return nil, fmt.Errorf("Tag does not exist for %s: %s", localName, tag)
}
layersSeen := make(map[string]bool)
layer, err := s.graph.Get(layerId)
if err != nil {
return nil, err
}
manifest.Architecture = layer.Architecture
manifest.FSLayers = make([]*registry.FSLayer, 0, 4)
manifest.History = make([]*registry.ManifestHistory, 0, 4)
var metadata runconfig.Config
if layer.Config != nil {
metadata = *layer.Config
}
for ; layer != nil; layer, err = layer.GetParent() {
if err != nil {
return nil, err
}
if layersSeen[layer.ID] {
break
}
if layer.Config != nil && metadata.Image != layer.ID {
err = runconfig.Merge(&metadata, layer.Config)
if err != nil {
return nil, err
}
}
checksum, err := layer.GetCheckSum(s.graph.ImageRoot(layer.ID))
if err != nil {
return nil, fmt.Errorf("Error getting image checksum: %s", err)
}
if tarsum.VersionLabelForChecksum(checksum) != tarsum.Version1.String() {
archive, err := layer.TarLayer()
if err != nil {
return nil, err
}
defer archive.Close()
tarSum, err := tarsum.NewTarSum(archive, true, tarsum.Version1)
if err != nil {
return nil, err
}
if _, err := io.Copy(ioutil.Discard, tarSum); err != nil {
return nil, err
}
checksum = tarSum.Sum(nil)
// Save checksum value
if err := layer.SaveCheckSum(s.graph.ImageRoot(layer.ID), checksum); err != nil {
return nil, err
}
}
jsonData, err := layer.RawJson()
if err != nil {
return nil, fmt.Errorf("Cannot retrieve the path for {%s}: %s", layer.ID, err)
}
manifest.FSLayers = append(manifest.FSLayers, ®istry.FSLayer{BlobSum: checksum})
layersSeen[layer.ID] = true
manifest.History = append(manifest.History, ®istry.ManifestHistory{V1Compatibility: string(jsonData)})
}
manifestBytes, err := json.MarshalIndent(manifest, "", " ")
if err != nil {
return nil, err
}
return manifestBytes, nil
}
func (s *TagStore) pushV2Repository(r *registry.Session, localRepo Repository, out io.Writer, repoInfo *registry.RepositoryInfo, tag string, sf *streamformatter.StreamFormatter) error {
endpoint, err := r.V2RegistryEndpoint(repoInfo.Index)
if err != nil {
if repoInfo.Index.Official {
glog.V(1).Infof("Unable to push to V2 registry, falling back to v1: %s", err)
return ErrV2RegistryUnavailable
}
return fmt.Errorf("error getting registry endpoint: %s", err)
}
tags, err := s.getImageTags(localRepo, tag)
if err != nil {
return err
}
if len(tags) == 0 {
return fmt.Errorf("No tags to push for %s", repoInfo.LocalName)
}
auth, err := r.GetV2Authorization(endpoint, repoInfo.RemoteName, false)
if err != nil {
return fmt.Errorf("error getting authorization: %s", err)
}
for _, tag := range tags {
glog.V(1).Infof("Pushing repository: %s:%s", repoInfo.CanonicalName, tag)
layerId, exists := localRepo[tag]
if !exists {
return fmt.Errorf("tag does not exist: %s", tag)
}
layer, err := s.graph.Get(layerId)
if err != nil {
return err
}
m := ®istry.ManifestData{
SchemaVersion: 1,
Name: repoInfo.RemoteName,
Tag: tag,
Architecture: layer.Architecture,
}
var metadata runconfig.Config
if layer.Config != nil {
metadata = *layer.Config
}
layersSeen := make(map[string]bool)
layers := []*image.Image{layer}
for ; layer != nil; layer, err = layer.GetParent() {
if err != nil {
return err
}
if layersSeen[layer.ID] {
break
}
layers = append(layers, layer)
layersSeen[layer.ID] = true
}
m.FSLayers = make([]*registry.FSLayer, len(layers))
m.History = make([]*registry.ManifestHistory, len(layers))
// Schema version 1 requires layer ordering from top to root
for i, layer := range layers {
glog.V(1).Infof("Pushing layer: %s", layer.ID)
if layer.Config != nil && metadata.Image != layer.ID {
if err := runconfig.Merge(&metadata, layer.Config); err != nil {
return err
}
}
jsonData, err := layer.RawJson()
if err != nil {
return fmt.Errorf("cannot retrieve the path for %s: %s", layer.ID, err)
}
checksum, err := layer.GetCheckSum(s.graph.ImageRoot(layer.ID))
if err != nil {
return fmt.Errorf("error getting image checksum: %s", err)
}
var exists bool
if len(checksum) > 0 {
dgst, err := digest.ParseDigest(checksum)
if err != nil {
return fmt.Errorf("Invalid checksum %s: %s", checksum, err)
}
// Call mount blob
exists, err = r.HeadV2ImageBlob(endpoint, repoInfo.RemoteName, dgst, auth)
if err != nil {
out.Write(sf.FormatProgress(stringid.TruncateID(layer.ID), "Image push failed", nil))
return err
}
}
if !exists {
if cs, err := s.pushV2Image(r, layer, endpoint, repoInfo.RemoteName, sf, out, auth); err != nil {
return err
} else if cs != checksum {
// Cache new checksum
if err := layer.SaveCheckSum(s.graph.ImageRoot(layer.ID), cs); err != nil {
return err
}
checksum = cs
}
} else {
out.Write(sf.FormatProgress(stringid.TruncateID(layer.ID), "Image already exists", nil))
}
m.FSLayers[i] = ®istry.FSLayer{BlobSum: checksum}
m.History[i] = ®istry.ManifestHistory{V1Compatibility: string(jsonData)}
}
if err := validateManifest(m); err != nil {
return fmt.Errorf("invalid manifest: %s", err)
}
glog.V(1).Infof("Pushing %s:%s to v2 repository", repoInfo.LocalName, tag)
mBytes, err := json.MarshalIndent(m, "", " ")
if err != nil {
return err
}
js, err := libtrust.NewJSONSignature(mBytes)
if err != nil {
return err
}
if err = js.Sign(s.trustKey); err != nil {
return err
}
signedBody, err := js.PrettySignature("signatures")
if err != nil {
return err
}
glog.Infof("Signed manifest for %s:%s using daemon's key: %s", repoInfo.LocalName, tag, s.trustKey.KeyID())
// push the manifest
digest, err := r.PutV2ImageManifest(endpoint, repoInfo.RemoteName, tag, signedBody, mBytes, auth)
if err != nil {
return err
}
out.Write(sf.FormatStatus("", "Digest: %s", digest))
}
return nil
}