--sig-proxy=true \
    ${DOCKER_SOCKET_MOUNT:--v /var/run/docker.sock:/var/run/docker.sock} \
    $CONTAINER_OPTIONS \
    --env-file <(env | grep -v ${ENV_BLOCKLIST}) \
    -e IN_BUILD_CONTAINER=1 \
    -e TZ="${TIMEZONE:-$TZ}" \
    --mount "type=bind,source=${MOUNT_SOURCE},destination=/work" \
    --mount "type=volume,source=go,destination=/go" \
    --mount "type=volume,source=gocache,destination=/gocache" \

  IMAGE_VERSION=master-b0f2fd3b4240c8178b14de4689d0e663e11868ff
fi
if [[ "${IMAGE_NAME:-}" == "" ]]; then
  IMAGE_NAME=build-tools
fi

DOCKER_GID="${DOCKER_GID:-$(grep '^docker:' /etc/group | cut -f3 -d:)}"

TIMEZONE=$(readlink "$readlink_flags" /etc/localtime | sed -e 's/^.*zoneinfo\///')

TARGET_OUT="${TARGET_OUT:-$(pwd)/out/${TARGET_OS}_${TARGET_ARCH}}"
TARGET_OUT_LINUX="${TARGET_OUT_LINUX:-$(pwd)/out/linux_${TARGET_ARCH}}"