message: ci: allowed to create users with duplicate in run_envoy_docker script
  This PR fixes (Linux) by passing --non-unique to docker command. This option allows creating duplicate users.
  Risk Level: Low
  Testing: manual OsX, Linux
diff: @@ -21,5 +21,5 @@ mkdir -p "${ENVOY_DOCKER_BUILD_DIR}"
  docker run --rm -t -i -e http_proxy=${http_proxy} -e https_proxy=${https_proxy} \
  -u "${USER}":"${USER_GROUP}" -v "${ENVOY_DOCKER_BUILD_DIR}":/build \
  -v "$PWD":/source -e NUM_CPUS --cap-add SYS_PTRACE "${IMAGE_NAME}":"${IMAGE_ID}" \
  - /bin/bash -lc "groupadd --gid $(id -g) -f envoygroup && useradd --uid $(id -u) --gid $(id -g) \
  + /bin/bash -lc "groupadd --gid $(id -g) -f envoygroup && useradd -o --uid $(id -u) --gid $(id -g) \
  --no-create-home --home-dir /source envoybuild && su envoybuild -c \"cd source && $*\""
  