#!/bin/bash -e
#
# Build the docker container and push it to quay
# ./build-docker push
#
# Build the docker container locally without pushing to registry
# ./build-docker build

DOCKER_REGISTRY=${DOCKER_REGISTRY:=quay.io}
DOCKER_REPO=${DOCKER_REPO:=coreos/dex}
repo=$DOCKER_REGISTRY/$DOCKER_REPO

version=$(./git-version)

stage() {
  echo -e "\033[36m----> $1\033[0m"
}

build() {
  stage "build $repo:$version"
  docker build -q --rm=true -t $repo:$version .
  docker tag $repo:$version $repo:latest
}

push() {
  stage "push image $repo:$version"
  if [ -v $DOCKER_USER ] || [ -v $DOCKER_PASSWORD ]; then
      echo "env variables not set: DOCKER_USER, DOCKER_PASSWORD. skipping login, assuming creds in .dockercfg"
  else
      echo logging in as $DOCKER_USER
      docker login --username="$DOCKER_USER" --password="$DOCKER_PASSWORD" --email="dex@example.com" $DOCKER_REGISTRY
  fi

  docker push $repo:$version
  docker push $repo:latest
}

clean() {
  docker rmi $repo:$version
  docker rmi $repo:latest
}

if [[ "clean" == "$1" ]]; then
  clean
else
  build
  if [[ "push" == "$1" ]]; then
    push
  fi
fi