misc/docker: chmod u+x on gensearchtypes.sh

Because docker unpacks the file without its +x, which makes go generate
fail when trying to execute it.

Change-Id: I9998b849110437c6faff89090f5dbe98fe2f2c9b

misc/docker/release/build-binaries.go

@@ -140,6 +140,8 @@ func fetchCamliSrc() {
 		}
 		check(f.Close())
 	}
+	// TODO(mpl): remove once https://camlistore-review.googlesource.com/8146 is in.
+	check(os.Chmod("app/publisher/js/gensearchtypes.sh", 0500))
 }
 
 func build() {