add binary extension to docker binary in tgz

Docker-DCO-1.1-Signed-off-by: Daniel, Dao Quang Minh <dqminh89@gmail.com> (github: dqminh)

project/make/tgz

@@ -25,7 +25,7 @@ for d in "$CROSS/"*/*; do
 	mkdir -p "$DEST/build"
 	
 	mkdir -p "$DEST/build/usr/local/bin"
-	cp -L "$d/$BINARY_FULLNAME" "$DEST/build/usr/local/bin/docker"
+	cp -L "$d/$BINARY_FULLNAME" "$DEST/build/usr/local/bin/docker$BINARY_EXTENSION"
 	
 	tar --numeric-owner --owner 0 -C "$DEST/build" -czf "$TGZ" usr