ministryofjustice/Claim-for-Crown-Court-Defence

#!/bin/sh

function _circleci_build() {
  usage="build -- build, tag and push app image for current CircleCI commit to ecr
  Usage: build"

  if [[ -z "${ECR_ENDPOINT}" ]] || \
      [[ -z "${AWS_DEFAULT_REGION}" ]] || \
      [[ -z "${GITHUB_TEAM_NAME_SLUG}" ]] || \
      [[ -z "${REPO_NAME}" ]] || \
      [[ -z "${CIRCLE_BRANCH}" ]] || \
      [[ -z "${CIRCLE_SHA1}" ]]
  then
    echo "Missing environment vars: only run this via circleCI with all relevant environment variables"
    return 1
  fi

  # build
  docker_registry=${ECR_ENDPOINT}/${GITHUB_TEAM_NAME_SLUG}/${REPO_NAME}
  docker_registry_tag=$docker_registry:app-${CIRCLE_SHA1}

  printf "\e[33m------------------------------------------------------------------------\e[0m\n"
  printf "\e[33mBranch: $CIRCLE_BRANCH\e[0m\n"
  printf "\e[33mRegistry tag: $docker_registry_tag\e[0m\n"
  printf "\e[33m------------------------------------------------------------------------\e[0m\n"
  aws ecr get-login-password --region ${AWS_DEFAULT_REGION} | docker login --username AWS --password-stdin ${ECR_ENDPOINT}

  docker build \
    --build-arg VERSION_NUMBER="NOT USED ANYMORE" \
    --build-arg BUILD_DATE=$(date +%Y-%m-%dT%H:%M:%S%z) \
    --build-arg COMMIT_ID=${CIRCLE_SHA1} \
    --build-arg BUILD_TAG="app-${CIRCLE_SHA1}" \
    --build-arg APP_BRANCH=${CIRCLE_BRANCH} \
    --build-arg LIVE1_DB_TASK=migrate \
    --pull \
    --tag $docker_registry_tag \
    --file docker/Dockerfile .

  # push
  docker push $docker_registry_tag

  if [ "${CIRCLE_BRANCH}" == "master" ]; then
    # Tag the master image twice - once as 'app-latest' and once as 'app-latest-<timestamp>'
    # This will ensure that old production images are persisted in ECR when new images are pushed
    docker_registry_current_production_tag=$docker_registry:app-latest
    docker tag $docker_registry_tag $docker_registry_current_production_tag
    docker push $docker_registry_current_production_tag

    docker_registry_latest_tag=$docker_registry:app-latest-$(date +"%Y%m%d%H%M%S")
  else
    branch_name=$(echo $CIRCLE_BRANCH | tr '/\' '-')
    docker_registry_latest_tag=$docker_registry:app-${branch_name}-latest
  fi

  docker tag $docker_registry_tag $docker_registry_latest_tag
  docker push $docker_registry_latest_tag
}

_circleci_build $@