git.ozlabs.org Git - petitboot/blob - docker/build-builder

   1 #!/usr/bin/env bash
   2
   3 set -e
   4
   5 name="$(basename $0)"
   6
   7 : ${TOP_DIR:="$( cd "$( dirname "${BASH_SOURCE[0]}" )/.." && pwd )"}
   8
   9 source ${TOP_DIR}/docker/builder-include
  10
  11 : ${DOCKER_FILE:="${TOP_DIR}/docker/Dockerfile.builder"}
  12 : ${DOCKER_FROM:="$(docker_from)"}
  13
  14 usage () {
  15         echo "${name} - Builds a docker image that contains tools for building petitboot." >&2
  16         echo "Usage: ${name} [flags]" >&2
  17         echo "Option flags:" >&2
  18         echo "  -d --dry-run  - Do not run build commands." >&2
  19         echo "  -h --help     - Show this help and exit." >&2
  20         echo "  -p --purge    - Remove existing docker image and rebuild." >&2
  21         echo "  -r --rebuild  - Rebuild existing docker image." >&2
  22         echo "  -t --tag      - Print Docker tag to stdout and exit." >&2
  23         echo "  -v --verbose  - Verbose execution." >&2
  24         echo "Environment:" >&2
  25         echo "  DOCKER_FILE   - Default: '${DOCKER_FILE}'" >&2
  26         echo "  DOCKER_FROM   - Default: '${DOCKER_FROM}'" >&2
  27         echo "  DOCKER_TAG    - Default: '${DOCKER_TAG}'" >&2
  28         echo "Examples:" >&2
  29         echo "  ${name} -v"
  30 }
  31
  32 short_opts="dhprtv"
  33 long_opts="dry-run,help,purge,rebuild,tag,verbose"
  34
  35 opts=$(getopt --options ${short_opts} --long ${long_opts} -n "${name}" -- "$@")
  36
  37 if [ $? != 0 ]; then
  38         echo "${name}: ERROR: Internal getopt" >&2
  39         exit 1
  40 fi
  41
  42 eval set -- "${opts}"
  43
  44 while true ; do
  45         case "${1}" in
  46         -d | --dry-run)
  47                 dry_run=1
  48                 shift
  49                 ;;
  50         -h | --help)
  51                 usage=1
  52                 shift
  53                 ;;
  54         -p | --purge)
  55                 purge=1
  56                 shift
  57                 ;;
  58         -r | --rebuild)
  59                 rebuild=1
  60                 shift
  61                 ;;
  62         -t | --tag)
  63                 tag=1
  64                 shift
  65                 ;;
  66         -v | --verbose)
  67                 set -x
  68                 verbose=1
  69                 shift
  70                 ;;
  71         --)
  72                 shift
  73                 break
  74                 ;;
  75         *)
  76                 echo "${name}: ERROR: Internal opts" >&2
  77                 exit 1
  78                 ;;
  79         esac
  80 done
  81
  82 if [[ -n "${usage}" ]]; then
  83         usage
  84         exit 0
  85 fi
  86
  87 if [[ -n "${tag}" ]]; then
  88         show_tag
  89         exit 0
  90 fi
  91
  92 version () {
  93         echo "$@" | awk -F. '{ printf("%d%03d%03d%03d\n", $1,$2,$3,$4); }'
  94 }
  95
  96 # Support for docker versions older than 17.05.
  97 # See https://github.com/moby/moby/issues/32457
  98 if [[ $(version "$(docker version --format '{{.Server.Version}}')") < $(version "17.05") ]]; then
  99         tmp_file="${DOCKER_FILE}.tmp"
 100         trap "rm -f ${tmp_file}" EXIT
 101
 102         cp -f ${DOCKER_FILE} ${tmp_file}
 103         DOCKER_FILE=${tmp_file}
 104         sed --in-place "s|ARG DOCKER_FROM||" ${tmp_file}
 105         sed --in-place "s|\${DOCKER_FROM}|${DOCKER_FROM}|" ${tmp_file}
 106 fi
 107
 108 if [[ -n "${purge}" ]] && docker inspect --type image ${DOCKER_TAG} >/dev/null 2>/dev/null; then
 109         echo "Removing docker image: ${DOCKER_TAG}" >&2
 110         run_cmd "docker rmi --force ${DOCKER_TAG}"
 111 elif [[ -z "${rebuild}" ]] && docker inspect --type image ${DOCKER_TAG} >/dev/null 2>/dev/null; then
 112         echo "Docker image exists: ${DOCKER_TAG}" >&2
 113         show_tag
 114         exit 0
 115 fi
 116
 117 echo "Building docker image: ${DOCKER_TAG}" >&2
 118
 119 cd ${TOP_DIR}
 120 run_cmd "docker build \
 121         --file "${DOCKER_FILE}" \
 122         --build-arg DOCKER_FROM=${DOCKER_FROM} \
 123         --tag ${DOCKER_TAG} \
 124         ."
 125
 126 show_tag