.gitlab-ci.yml

stages:
  - build
  - publish

## Templates
.runners: &runners
  tags:
    - private
    - docker
    - kubernetes
    - amd64

.publish_container_image: &publish_container_image
  <<: *runners
  image:
    name: gcr.io/kaniko-project/executor:debug
    entrypoint: [""]
  script:
    - REGISTRY_AUTH=$(echo -n ${REGISTRY_USER}:${REGISTRY_PASSWORD} | base64)
    - echo "{\"auths\":{\"${REGISTRY}\":{\"auth\":\"${REGISTRY_AUTH}\"}}}" > /kaniko/.docker/config.json
    - /kaniko/executor
      --context ${CI_PROJECT_DIR}
      --dockerfile ${CI_PROJECT_DIR}/${CONTAINER_DOCKERFILE:-Dockerfile}
      --destination ${CONTAINER_IMAGE_NAME}
      ${KANIKO_EXTRA_ARG}

build:
  stage: build
  <<: *runners
  image: golang:1.12.7
  before_script:
    - go mod download
    - mkdir -p release/linux/amd64/
  script:
    - GOOS=linux GOARCH=amd64 go build -o release/linux/amd64/drone-github-release -ldflags="-X 'main.version=${CI_COMMIT_TAG:-${CI_COMMIT_SHORT_SHA}}'"
  artifacts:
    paths:
      - release/

## Gitlab: builds every commit publishing the container image in the gitlab registry
gitlab_unstable:
  stage: publish
  <<: *publish_container_image
  variables:
    REGISTRY: ${CI_REGISTRY}
    REGISTRY_USER: ${CI_REGISTRY_USER}
    REGISTRY_PASSWORD: ${CI_REGISTRY_PASSWORD}
    CONTAINER_IMAGE_NAME: ${CI_REGISTRY_IMAGE}:${CI_COMMIT_SHORT_SHA}
    CONTAINER_DOCKERFILE: docker/Dockerfile.linux.amd64
    KANIKO_EXTRA_ARG: ""
  except:
    - /^v([0-9]+)\.([0-9]+)\.([0-9]+)-rc([0-9]+)-fork$/
    - /^v([0-9]+)\.([0-9]+)\.([0-9]+)-fork$/

## Dockerhub: publish the image if is a release candidate or a final release
dockerhub_release_cadidate:
  stage: publish
  <<: *publish_container_image
  variables:
    REGISTRY: ${DOCKERHUB_REGISTRY}
    REGISTRY_USER: ${DOCKERHUB_REGISTRY_USER}
    REGISTRY_PASSWORD: ${DOCKERHUB_REGISTRY_PASSWORD}
    CONTAINER_IMAGE_NAME: ${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${CI_COMMIT_TAG}
    CONTAINER_DOCKERFILE: docker/Dockerfile.linux.amd64
    KANIKO_EXTRA_ARG: ""
  only:
    - /^v([0-9]+)\.([0-9]+)\.([0-9]+)-rc([0-9]+)-fork$/

dockerhub_stable:
  stage: publish
  <<: *publish_container_image
  variables:
    REGISTRY: ${DOCKERHUB_REGISTRY}
    REGISTRY_USER: ${DOCKERHUB_REGISTRY_USER}
    REGISTRY_PASSWORD: ${DOCKERHUB_REGISTRY_PASSWORD}
    CONTAINER_IMAGE_NAME: ${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:${CI_COMMIT_TAG}
    CONTAINER_DOCKERFILE: docker/Dockerfile.linux.amd64
    KANIKO_EXTRA_ARG: "--destination ${DOCKERHUB_REGISTRY_USER}/${CI_PROJECT_NAME}:latest"
  only:
    - /^v([0-9]+)\.([0-9]+)\.([0-9]+)-fork$/