Docker build script

build.sh

#!/usr/bin/env bash
# ex: set fdm=marker
# usage {{{1
#/ Usage:
#/       ./build.sh -r "REGISTRY/NAME" [OPTIONS]
#/
#/    -r|--registry)
#/       the name of the image or registry to push to [required]
#/
#/    -t|--tag)
#/       the tag to assign the docker image
#/
#/    -n|--no-cache)
#/       do not use the cache when building this image
#/
#/    -f|--file)
#/       the Dockerfile to specify during build
#/
#/    -b|--old-build-kit)
#/       use the older docker build kit (better debugging)
#/
#/    -h|-?|--help)
#/       show this help and exit
#/
#/
# 1}}}
# environment {{{1
DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
PROJECT=${PROJECT:-"Some Project Name in $DIR"}
DOCKER_FILE="Dockerfile"
TAG="latest"
NOCACHED=""
BUILD_KIT=1
# 1}}}
# functions {{{1
banner() { # {{{2
  BANNER="$(cat <<EOF
MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMWx,;dXMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM
MMMMMMMMMMMMMMMMMMMMMMMMMMMMWNKl.  'dXMMMMMMNK0XNWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM
MMMMMMMMMMMMMMMMMMMMMMMWKOdl:,..     ;0MMMMWd....;cox0NWMMMMMMMMMMMMMMMMMMMMMMMM
MMMMMMMMMMMMMMMMMMMWKxc,.   .';,    ;kNMMMMWKdl:,..  ..:oONWMMMMMMMMMMMMMMMMMMMM
MMMMMMMMMMMMMMMMN0o;.  .;lxOXNWx..;kNMMMMMMMMMMMWNKko:..  .cxXWMMMMMMMMMMMMMMMMM
MMMMMMMMMMMMMWKd;. .,lkXWMMMMMMN0KNMMMMMMMMMMMMMMMMMMWN0d:.  .cONMMMMMMMMMMMMMMM
MMMMMMMMMMMW0l.  'lONMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMWKx:. .,xXMMMMMMMMMMMMM
MMMMMMMMMW0c. .;kXMMMMMMMMMMMMMMKo::::::::::ckWMMMMMMMMMMMMMW0o.  ,xNMMMMMMMMMMM
MMMMMMMMXo. .:ONMMMMMMMMWMMMMMMMk.           :NMMMMMMWWMMMMMMMWXo.  ;OWMMMMMMMMM
MMMMMMWO,  ,kNMMMMMMMWKo:xNMMMWNd.           ;KWMMMW0lckNMMMMMMMWKl. .oXMMMMMMMM
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MMMMNo. .xNMMMMMMWKo.                                    .;kNMMMMMMWK:  ,0MMMMMM
MMMNo. 'kWMMMMMWKo.                                        .;kNMMMMMMXc  ,0MMMMM
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MX:  cXMMMMMMMMMMM0,       .dXWMMMMMMMMMMMMMMMMMNO:.      .dWMMMMMMMMMMMk. .kMMM
Mk. .OMMMMMMMMMMMXc       :KWMMMMMMMMMMMMMMMMMMMMMNx.      .kWMMMMMMMMMMNc  cNMM
Nl  :XMMMMMW0oooo;.      cXMMMMMMMMMMMMMMMMMMMMMMMMWk.      'loooxXMMMMMMk. 'OMM
X;  oWMMMMMNl           ,KMMMMMMMMMMMMMMMMMMMMMMMMMMWd.          'OMMMMMMK, .xMM
0' .xMMMMMMNl           oWMMMMMMMMMMMMMMMMMMMMMMMMMMM0'          '0MMMMMMX:  oWM
0' .kMMMMMMWl          .xMMMMMMMMMMMMMMMMMMMMMMMMMMMMK;          '0MMMMMMX:  lWM
0' .xMMMMMMWl           oWMMMMMMMMMMMMMMMMMMMMMMMMMMM0'          'OMMMMMMX:  oWM
X;  oWMMMMMNl           ,KMMMMMMMMMMMMMMMMMMMMMMMMMMWd.          'OMMMMMMK, .xMM
Nl  :XMMMMMW0oooo;.      cXMMMMMMMMMMMMMMMMMMMMMMMMWk.      'loooxXMMMMMMk. 'OMM
Mk. .OMMMMMMMMMMMXc       :KWMMMMMMMMMMMMMMMMMMMMMNx.      .kWMMMMMMMWNNXc  cXMM
MX:  lNMMMMMMMMMMM0,       .oKWMMMMMMMMMMMMMMMMMNO:       .oWMMMMMMMWx,,;. .kMMM
MMKolOWMMMMMMMMMW0c.         .ckKWMMMMMMMMMMWN0o,.         ,xNMMMMMMWx.    .:cxN
MMMMMMMMMMMMMMMWx.              .,codxxxxxdl:'.              :KMMMMMMNo.     .lX
MMMMMMMMMMMMMMMWKo.                                        .;kNMMMMMMMXl.,cdOXWM
MMMMMMMNOkOKXWWMMWKo.                                    .;kNMMMMMMMMMMNXNMMMMMM
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MMMMMMNl     .,xWMMMMWKocxNMMMWNd.           ;0WMMMW0lckNMMMMMMMWKxd0WMMMMMMMMMM
MMMMMM0'     ,kNMMMMMMMMWMMMMMMMk.           :NMMMMMMMMMMMMMMMWXo. .oNMMMMMMMMMM
MMMMMMXl;okc. .;kNMMMMMMMMMMMMMMKo::::::::::ckWMMMMMMMMMMMMMW0o.  ,xNMMMMMMMMMMM
MMMMMMMWWWMW0l.  'oONMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMWKx:. .;xXMMMMMMMMMMMMM
MMMMMMMMMMMMMWKd,. .,lkXWMMMMMMMMMMMMMMMMMMMMMMMMMMMMWN0d:.  .cONMMMMMMMMMMMMMMM
MMMMMMMMMMMMMMMMN0o;.  .;lxOXNWMMMMMMMMMMMMMMMMMWX0ko:..  .ckXWMMMMMMMMMMMMMMMMM
MMMMMMMMMMMMMMMMMMMWKxl,.   ..;cloxxkkkkkkkxdol:,..  ..:oOXWMMMMMMMMMMMMMMMMMMMM
MMMMMMMMMMMMMMMMMMMMMMMWXOdl:,...             ...;cok0NWMMMMMMMMMMMMMMMMMMMMMMMM
MMMMMMMMMMMMMMMMMMMMMMMMMMMMWNKOxdlc:;;;;;:codk0XWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM
EOF
)"
  BANNER="$BANNER\n  \033[32m  Docker Image Builder\033[39m"
  echo -e "$BANNER\n\n"
} # 2}}}
die() { # {{{2
  echo -e "\033[31mFAILURE:\033[39m $1"
  exit 1
} # 2}}}
warn() { # {{{2
  echo -e "\033[33mWARNING:\033[39m $1"
} # 2}}}
show_help() { # {{{2
  grep '^#/' "${BASH_SOURCE[0]}" | cut -c4- || \
    die "Failed to display usage information"
} # 2}}}
# 1}}}
# arguments {{{1
while :; do
  case $1 in # check arguments {{{2
    -t|--tag) # Docker tag {{{3
      TAG=$2
      shift 2
      ;; # 3}}}
    -n|--no-cache) # build without cache {{{3
      NOCACHED="--no-cache"
      shift
      ;; # 3}}}
    -f|--file) # Dockerfile to use {{{3
      DOCKER_FILE=$2
      shift 2
      ;; # 3}}}
    -r|--registry) # the registry to push to
      REGISTRY="$2"
      shift
      ;;
    -b|--old_build_kit) # the buildkit setting
      BUILD_KIT=0
      shift
      ;;
    -h|-\?|--help) # help {{{3
      banner
      show_help
      exit
      ;; # 3}}}
    -?*) # unknown argument {{{3
      warn "Unknown option (ignored): $1"
      shift
      ;; # 3}}}
    *) # default {{{3
      break # 3}}}
  esac # 2}}}
done
# 1}}}
# logic {{{1
banner
info "DOKCER_BUILDKIT=$BUILD_KIT"
info "BUILDING $REGISTRY:$TAG using $DOCKER_FILE and these flags:"
info "\t$NOCACHED"
DOCKER_BUILDKIT=$BUILD_KIT docker build -f "$DOCKER_FILE" $NOCACHED  \
  -t "$REGISTRY:$TAG" . || die "Image failed to build."
docker push "$REGISTRY:$TAG" || die "Couldn't push $REGISTRY:$TAG"
# 1}}}