dokku/plugins/builder-railpack/builder-build

#!/usr/bin/env bash
source "$PLUGIN_CORE_AVAILABLE_PATH/common/functions"
source "$PLUGIN_AVAILABLE_PATH/builder-railpack/internal-functions"
source "$PLUGIN_AVAILABLE_PATH/config/functions"
set -eo pipefail
[[ $DOKKU_TRACE ]] && set -x

trigger-builder-railpack-builder-build() {
  declare desc="builder-railpack builder-build plugin trigger"
  declare trigger="builder-build"
  declare BUILDER_TYPE="$1" APP="$2" SOURCECODE_WORK_DIR="$3"

  if [[ "$BUILDER_TYPE" != "railpack" ]]; then
    return
  fi

  dokku_log_info1 "Building $APP from railpack"

  if ! command -v "railpack" &>/dev/null; then
    dokku_log_fail "Missing railpack, install it"
  fi

  local IMAGE=$(get_app_image_name "$APP")
  local DOCKER_BUILD_LABEL_ARGS=("--label=dokku" "--label=org.label-schema.schema-version=1.0" "--label=org.label-schema.vendor=dokku" "--label=com.dokku.image-stage=build" "--label=com.dokku.builder-type=railpack" "--label=com.dokku.app-name=$APP")

  pushd "$SOURCECODE_WORK_DIR" &>/dev/null

  plugn trigger pre-build "$BUILDER_TYPE" "$APP" "$SOURCECODE_WORK_DIR"

  no_cache="$(fn-builder-railpack-computed-no-cache "$APP")"
  RAILPACK_ARGS=""
  if [[ "$no_cache" == "true" ]]; then
    RAILPACK_ARGS="$RAILPACK_ARGS --no-cache"
  fi

  local DOCKER_ARGS=$(: | plugn trigger docker-args-build "$APP" "$BUILDER_TYPE")
  DOCKER_ARGS+=$(: | plugn trigger docker-args-process-build "$APP" "$BUILDER_TYPE")

  # strip --link, --volume and -v args from DOCKER_ARGS
  local DOCKER_ARGS=$(sed -e "s/^--link=[[:graph:]]\+[[:blank:]]\?//g" -e "s/^--link[[:blank:]]\?[[:graph:]]\+[[:blank:]]\?//g" -e "s/^--volume=[[:graph:]]\+[[:blank:]]\?//g" -e "s/^--volume[[:blank:]]\?[[:graph:]]\+[[:blank:]]\?//g" -e "s/^-v[[:blank:]]\?[[:graph:]]\+[[:blank:]]\?//g" <<<"$DOCKER_ARGS")
  declare -a ARG_ARRAY
  eval "ARG_ARRAY=($DOCKER_ARGS)"

  eval "$(config_export app "$APP" --merged)"

  if [[ -f "$SOURCECODE_WORK_DIR/Procfile" ]]; then
    if procfile-util exists --process-type release; then
      procfile-util delete --process-type release
    fi
  fi

  # shellcheck disable=SC2086
  if ! railpack build "${ARG_ARRAY[@]}" $RAILPACK_ARGS --name "$IMAGE-build" "$SOURCECODE_WORK_DIR"; then
    dokku_log_warn "Failure building image"
    return 1
  fi

  if ! suppress_output "$DOCKER_BIN" image build -f "$PLUGIN_AVAILABLE_PATH/builder-railpack/dockerfiles/builder-build.Dockerfile" --build-arg APP_IMAGE="$IMAGE-build" "${DOCKER_BUILD_LABEL_ARGS[@]}" $DOKKU_GLOBAL_BUILD_ARGS -t "$IMAGE" "$SOURCECODE_WORK_DIR"; then
    "$DOCKER_BIN" image remove "$IMAGE-build"
    dokku_log_warn "Failure injecting docker labels and custom entrypoint on image"
    return 1
  fi

  "$DOCKER_BIN" image remove "$IMAGE-build"

  plugn trigger post-build "$BUILDER_TYPE" "$APP" "$SOURCECODE_WORK_DIR"
  popd &>/dev/null || pushd "/tmp" >/dev/null
}

trigger-builder-railpack-builder-build "$@"