[17.06] build: fix add from remote url

components/engine/builder/dockerfile/copy.go

@@ -30,9 +30,10 @@ type pathCache interface {
 // copyInfo is a data object which stores the metadata about each source file in
 // a copyInstruction
 type copyInfo struct {
-	root string
-	path string
-	hash string
+	root         string
+	path         string
+	hash         string
+	noDecompress bool
 }
 
 func newCopyInfoFromSource(source builder.Source, path string, hash string) copyInfo {
@@ -118,7 +119,9 @@ 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

components/engine/builder/dockerfile/dispatchers.go

@@ -156,6 +156,11 @@ func add(req dispatchRequest) error {
 		return err
 	}
 	copyInstruction.allowLocalDecompression = true
+	for _, ci := range copyInstruction.infos {
+		if ci.noDecompress {
+			copyInstruction.allowLocalDecompression = false
+		}
+	}
 
 	return req.builder.performCopy(req.state, copyInstruction)
 }

components/engine/integration-cli/docker_api_build_test.go

@@ -4,6 +4,7 @@ import (
 	"archive/tar"
 	"bytes"
 	"encoding/json"
+	"fmt"
 	"io/ioutil"
 	"net/http"
 	"regexp"
@@ -322,6 +323,50 @@ func (s *DockerSuite) TestBuildOnBuildCache(c *check.C) {
 	assert.Equal(c, parentID, image.Parent)
 }
 
+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")
+}
+
 type buildLine struct {
 	Stream string
 	Aux    struct {