.gitlab-ci.yml

stages:
  - build
  - deploy

variables:
  DEPLOYMENT_MANIFEST_PATH: ./kubernetes.manifest.yaml
  DOCKER_DRIVER: overlay

# this command will be run before every script
default:
  image: docker:20-git
  services:
    - docker:20-dind
  before_script:
    - export VERSION=v`date +%Y%m%d`-`echo "$CI_COMMIT_SHA" | head -c7`
    - export CI_REGISTRY_FULL_IMAGE="$CI_REGISTRY_IMAGE:$VERSION"

build:
  stage: build
  script:
    - apk update
    - echo "TAG=$VERSION" >> variables.env             # and append to the variables.env file
    - docker login -u gitlab-ci-token -p "${CI_JOB_TOKEN}" "${CI_REGISTRY}"
    - docker build -t $CI_REGISTRY_IMAGE:$VERSION -t $CI_REGISTRY_IMAGE:latest .
    - docker push $CI_REGISTRY_IMAGE:$VERSION
    - docker push $CI_REGISTRY_IMAGE:latest
  rules:
    - if: $CI_COMMIT_BRANCH == $CI_DEFAULT_BRANCH
  artifacts:
    reports:
      dotenv: variables.env

deploy_production:
  stage: deploy
  image: alpine/k8s:1.20.7
  needs:
    - job: build
      artifacts: true
  script:
    ###
    # get gitlab release-cli to create a release
    - echo "preparing for release $VERSION"
    - wget https://gitlab.com/gitlab-org/release-cli/-/package_files/27206485/download -O /usr/local/bin/release-cli
    - chmod +x /usr/local/bin/release-cli
    ###
    - echo "Deploy to production"
    - apk update && apk add gettext
    - envsubst < $DEPLOYMENT_MANIFEST_PATH
    - envsubst < $DEPLOYMENT_MANIFEST_PATH | kubectl -s $K8S_SERVER --token $K8S_TOKEN apply -f -
  variables:
    ENVIRONMENT: tools
  environment:
    name: tools
  rules:
    - if: $CI_COMMIT_BRANCH == $CI_DEFAULT_BRANCH
  release:
    name: "Release $CI_COMMIT_SHA"
    description: "automatic release"  # $EXTRA_DESCRIPTION and the $VERSION
    tag_name: "$CI_COMMIT_SHA"                                                 # variables must be defined elsewhere
    ref: "$CI_COMMIT_SHA"                                            # in the pipeline. For example, in the
    assets:
      links:
        - name: "Docker Container Image"
          url: "https://$CI_REGISTRY_IMAGE:$VERSION"