message: Fixes for Tink Python's create_release.sh script:
  - Save a copy of the WORKSPACE before building wheels, and restore it afterwards.
  - Give ownership of all the files in the Tink Python folder to the non-root user.
diff: @@ -46,6 +46,10 @@ build_linux() {
  # https://docs.docker.com/engine/security/trust/content_trust/).
  export DOCKER_CONTENT_TRUST=1
  + # We use setup.py to build wheels; setup.py makes changes to the WORKSPACE
  + # file so we save a copy for backup.
  + cp WORKSPACE WORKSPACE.bak
  +
  # Build binary wheels.
  docker run \
  --volume "${TINK_PYTHON_ROOT_PATH}/..:/tmp/tink" \
  @@ -60,6 +64,12 @@ build_linux() {
  "${IMAGE}" \
  "${workdir}/tools/distribution/test_linux_binary_wheels.sh"
  + # Restore the original WORKSPACE.
  + mv WORKSPACE.bak WORKSPACE
  +
  + # Docker runs as root so we transfer ownership to the non-root user.
  + sudo chown -R "$(id -un):$(id -gn)" "${TINK_PYTHON_ROOT_PATH}"
  +
  echo "### Building Linux source distribution ###"
  local sorted=( $( echo "${PYTHON_VERSIONS[@]}" \
  | xargs -n1 | sort -V | xargs ) )
  