#!/usr/bin/env bash

# Usage:
#  ./build_dockers.bsh - Build all the compiling docker images
#  ./build_dockers.bsh lfs_centos_5 lfs_centos_7 - Build only CentOS 5 & 7 image
#
# Special Environment Variables
#  DOCKER_LFS_BUILD_VERSION - tag or sha to build envirnment off of. Important
#                             in CentOS
set -eu

CUR_DIR=$(dirname "${BASH_SOURCE[0]}")

: ${GOLANG_VERSION:=1.5.1}
export GOLANG_VERSION

#If you are not in docker group and you have sudo, default value is sudo
: ${SUDO=`if ( [ ! -w /var/run/docker.sock ] && id -nG | grep -qwv docker && [ "${DOCKER_HOST:+dh}" != "dh" ] ) && which sudo > /dev/null 2>&1; then echo sudo; fi`}

export DOCKER_LFS_BUILD_VERSION=${DOCKER_LFS_BUILD_VERSION:-master}

if [[ $# == 0 ]]; then
  IMAGE_NAMES=($(ls -d ${CUR_DIR}/git-lfs_*.dockerfile))
else
  IMAGE_NAMES=("${@}")
fi

#This will take a long time the first time
for IMAGE_NAME in "${IMAGE_NAMES[@]}"; do
  NAME=$(basename ${IMAGE_NAME%.*})
  #If you do decide to use the same key for all, this makes it easier. Only
  #creates keys for git-lfs_* images, none of the others should be signing.
  if [[ "${NAME}" == git-lfs_* ]] && [ ! -e ${CUR_DIR}/${NAME}.key ]; then
    touch ${CUR_DIR}/${NAME}.key
  fi

  echo Docker building ${NAME}
  ${CUR_DIR}/docker+.bsh ${IMAGE_NAME} > ${CUR_DIR}/Dockerfile
  $SUDO docker build -t git-lfs/${NAME} ${CUR_DIR}
  rm ${CUR_DIR}/Dockerfile
done