build: fix add from remote url

Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>

builder/dockerfile/copy.go

@@ -35,6 +35,7 @@ type copyInfo struct {
 	root         string
 	path         string
 	hash         string
+	noDecompress bool
 }
 
 func (c copyInfo) fullPath() (string, error) {
@@ -124,7 +125,9 @@ func (o *copier) getCopyInfoForSourcePath(orig string) ([]copyInfo, error) {
 	o.tmpPaths = append(o.tmpPaths, remote.Root())
 
 	hash, err := remote.Hash(path)
-	return newCopyInfos(newCopyInfoFromSource(remote, path, hash)), err
+	ci := newCopyInfoFromSource(remote, path, hash)
+	ci.noDecompress = true // data from http shouldn't be extracted even on ADD
+	return newCopyInfos(ci), err
 }
 
 // Cleanup removes any temporary directories created as part of downloading
@@ -387,7 +390,7 @@ func performCopyForInfo(dest copyInfo, source copyInfo, options copyFileOptions)
 	if src.IsDir() {
 		return copyDirectory(archiver, srcPath, destPath)
 	}
-	if options.decompress && archive.IsArchivePath(srcPath) {
+	if options.decompress && archive.IsArchivePath(srcPath) && !source.noDecompress {
 		return archiver.UntarPath(srcPath, destPath)
 	}
 

integration-cli/docker_api_build_test.go

@@ -366,6 +366,50 @@ func (s *DockerRegistrySuite) TestBuildCopyFromForcePull(c *check.C) {
 	assert.Contains(c, string(out), "Successfully built")
 }
 
+func (s *DockerSuite) TestBuildAddRemoteNoDecompress(c *check.C) {
+	buffer := new(bytes.Buffer)
+	tw := tar.NewWriter(buffer)
+	dt := []byte("contents")
+	err := tw.WriteHeader(&tar.Header{
+		Name:     "foo",
+		Size:     int64(len(dt)),
+		Mode:     0600,
+		Typeflag: tar.TypeReg,
+	})
+	require.NoError(c, err)
+	_, err = tw.Write(dt)
+	require.NoError(c, err)
+	err = tw.Close()
+	require.NoError(c, err)
+
+	server := fakestorage.New(c, "", fakecontext.WithBinaryFiles(map[string]*bytes.Buffer{
+		"test.tar": buffer,
+	}))
+	defer server.Close()
+
+	dockerfile := fmt.Sprintf(`
+		FROM busybox
+		ADD %s/test.tar /
+		RUN [ -f test.tar ]
+		`, server.URL())
+
+	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"))
+	require.NoError(c, err)
+	assert.Equal(c, http.StatusOK, res.StatusCode)
+
+	out, err := testutil.ReadBody(body)
+	require.NoError(c, err)
+	assert.Contains(c, string(out), "Successfully built")
+}
+
 func (s *DockerSuite) TestBuildWithSession(c *check.C) {
 	testRequires(c, ExperimentalDaemon)