build: fix add from remote url

Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>
Upstream-commit: 2981667e11e24e9e1e61252a40ceb11fd7cb9811
Component: engine

components/engine/builder/dockerfile/copy.go

@@ -32,9 +32,10 @@ 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 (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)
 	}