message: BLD: ci allows bad name user
diff: @@ -36,8 +36,13 @@ else
  rm /this_is_writable_file_system
  fi
  +if [ -n "${CI_BUILD_USER_FORCE_BADNAME}" ]; then
  + ADDUSER_OPTS="--force-badname"
  +fi
  +
  getent group "${CI_BUILD_GID}" || addgroup --gid "${CI_BUILD_GID}" "${CI_BUILD_GROUP}"
  -getent passwd "${CI_BUILD_UID}" || adduser --gid "${CI_BUILD_GID}" --uid "${CI_BUILD_UID}" \
  +getent passwd "${CI_BUILD_UID}" || adduser ${ADDUSER_OPTS} \
  + --gid "${CI_BUILD_GID}" --uid "${CI_BUILD_UID}" \
  --gecos "${CI_BUILD_USER} (generated by with_the_same_user script)" \
  --disabled-password --home "${CI_BUILD_HOME}" --quiet "${CI_BUILD_USER}"
  usermod -a -G sudo "${CI_BUILD_USER}"
  