docker:
  - image: circleci/buildpack-deps
shell: /usr/bin/env bash -euo pipefail -c
steps:
  - checkout
  - setup_remote_docker
  - run:
      name: Build Docker Image if Necessary
      command: |
        # There is an edge case that would cause an issue here - if dependencies are updated to an exact copy
        # of a previous version, for example if packge-lock.json is reverted, we need to manually push the new
        # image to the "latest" tag
        # Ignore job if running an enterprise build
        IMAGE_TAG=$(cat website/Dockerfile website/package-lock.json | sha256sum | awk '{print $1;}')
        echo "Using $IMAGE_TAG"
        if  [ "$CIRCLE_REPOSITORY_URL" != "git@github.com:hashicorp/nomad.git" ]; then
          echo "Not Nomad OSS Repo, not building website docker image"
        elif curl https://hub.docker.com/v2/repositories/hashicorp/nomad-website/tags/$IMAGE_TAG -fsL > /dev/null; then
            echo "Dependencies have not changed, not building a new website docker image."
        else
            cd website/
            docker build -t hashicorp/nomad-website:$IMAGE_TAG .
            docker tag hashicorp/nomad-website:$IMAGE_TAG hashicorp/nomad-website:latest
            docker login -u $WEBSITE_DOCKER_USER -p $WEBSITE_DOCKER_PASS
            docker push hashicorp/nomad-website
        fi