run

#!/bin/bash
set -eu -o pipefail
CONTAINER_NAME=toolbox
IMAGE_NAME=timjdfletcher/${CONTAINER_NAME}
IMAGE_TAG=tmp
PLATFORMS="linux/amd64,linux/arm64"
TOOLS="ca-certificates curl dnsutils jq less lsof mmc-utils net-tools procps strace tcpdump vim"

build () {
  _buildx_setup
  docker buildx build --load --tag "${IMAGE_NAME}:${IMAGE_TAG}" --build-arg TOOLS="${TOOLS}" --file Dockerfile .
  docker tag "${IMAGE_NAME}:${IMAGE_TAG}" "${IMAGE_NAME}:latest"
}

clean () {
  docker image rm "${IMAGE_NAME}:${IMAGE_TAG}" || true
  docker image rm "${IMAGE_NAME}:latest" || true
  docker buildx prune --force
  docker buildx rm builder || true
}

usage() {
  echo "./run build - Build a local image called ${IMAGE_NAME}:${IMAGE_TAG}"
  echo "./run release - Tests and then releases to dockerhub a multiarch version of the latest tag"
}

find_release(){
  TAG="$(git tag | grep ^${CONTAINER_NAME} | sort -n | tail -n 1)"
  git checkout "${TAG}"
  export IMAGE_TAG=$TAG
}

_buildx_setup () {
  docker buildx use builder || docker buildx create --name builder
  docker buildx inspect --bootstrap
}

release() {
  find_release
  _buildx_setup
  docker buildx build --platform "${PLATFORMS}" --tag "${IMAGE_NAME}:${IMAGE_TAG}" --build-arg TOOLS="${TOOLS}" --push --file Dockerfile .
  docker buildx build --platform "${PLATFORMS}" --tag "${IMAGE_NAME}:latest"       --build-arg TOOLS="${TOOLS}" --push --file Dockerfile .
}

CMD=${1:-}

shift || true
case ${CMD} in
    build) build ;;
    clean) clean ;;
    release) find_release && clean && release ;;
    *) usage ;;
esac