.gitlab-ci.yml

# Example GitLab CI/CD configuration
#
# Simple CI/CD configuration that first builds a docker image including the
# configuration, and then runs the validation inside a docker container. When
# successfull, the docker image is uploaded to the container registry

build_docker_image_and_validate:
  stage: build
  image: docker:20
  services:
    - docker:20-dind
  script:
    - echo -e "\e[96m\e[1mVerify Tag Format\e[0m"
    - "echo $CI_COMMIT_TAG | grep -oE '^([0-9]+\\.){2}[0-9]+$' || (echo \"ERROR: Invalid tag format, should be a three part version number (e.g. 1.2.3)\" && exit 1)"
    - echo -e "\e[96m\e[1mBuild Docker Image\e[0m"
    - IMAGE_TAG=$(echo "$CI_REGISTRY_IMAGE:$CI_COMMIT_TAG" | tr [:upper:] [:lower:])
    - docker build . -t $IMAGE_TAG
    - echo -e "\e[96m\e[1mValidate Configuration\e[0m"
    - docker run --rm $IMAGE_TAG python validate.py
    - echo -e "\e[96m\e[1mPush Docker Image\e[0m"
    - echo $CI_REGISTRY_PASSWORD | docker login -u $CI_REGISTRY_USER $CI_REGISTRY --password-stdin
    - 'if docker pull $IMAGE_TAG > /dev/null 2>&1; then echo "ERROR: An image with the given tag already exists. Please increment the contents of the VERSION file" && exit 1; fi'
    - docker push $IMAGE_TAG
  only:
    - tags
  timeout: 5 minutes