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Set OS on scratch image and prevent panic if empty

Signed-off-by: John Stephens <johnstep@docker.com>
This commit is contained in:
John Stephens 2017-11-06 18:21:10 -08:00
parent b00b1b1c40
commit a97817b673
No known key found for this signature in database
GPG key ID: 240549B2101E94D4
3 changed files with 39 additions and 2 deletions

View file

@ -1,6 +1,8 @@
package dockerfile
import (
"runtime"
"github.com/docker/docker/api/types/backend"
"github.com/docker/docker/builder"
"github.com/docker/docker/builder/remotecontext"
@ -73,7 +75,13 @@ func (m *imageSources) Unmount() (retErr error) {
func (m *imageSources) Add(im *imageMount) {
switch im.image {
case nil:
im.image = &dockerimage.Image{}
// set the OS for scratch images
os := runtime.GOOS
// Windows does not support scratch except for LCOW
if runtime.GOOS == "windows" {
os = "linux"
}
im.image = &dockerimage.Image{V1Image: dockerimage.V1Image{OS: os}}
default:
m.byImageID[im.image.ImageID()] = im
}

View file

@ -95,7 +95,14 @@ func (daemon *Daemon) create(params types.ContainerCreateConfig, managed bool) (
if err != nil {
return nil, err
}
os = img.OS
if img.OS != "" {
os = img.OS
} else {
// default to the host OS except on Windows with LCOW
if runtime.GOOS == "windows" && system.LCOWSupported() {
os = "linux"
}
}
imgID = img.ID()
if runtime.GOOS == "windows" && img.OS == "linux" && !system.LCOWSupported() {

View file

@ -619,6 +619,28 @@ func testBuildWithSession(c *check.C, dir, dockerfile string) (outStr string) {
return
}
func (s *DockerSuite) TestBuildScratchCopy(c *check.C) {
testRequires(c, DaemonIsLinux)
dockerfile := `FROM scratch
ADD Dockerfile /
ENV foo bar`
ctx := fakecontext.New(c, "",
fakecontext.WithDockerfile(dockerfile),
)
defer ctx.Close()
res, body, err := request.Post(
"/build",
request.RawContent(ctx.AsTarReader(c)),
request.ContentType("application/x-tar"))
c.Assert(err, checker.IsNil)
c.Assert(res.StatusCode, checker.Equals, http.StatusOK)
out, err := request.ReadBody(body)
require.NoError(c, err)
assert.Contains(c, string(out), "Successfully built")
}
type buildLine struct {
Stream string
Aux struct {