Tom/.gitlab-ci.yml

###############################################################
# Setting I use for cleaning up image tags                    #
# - Running cleanup every week                                #
# - Keeping 1 tag per image name matching : (?:v.\d+|dev)     #
# - Removing tags older than 7 days matching the default : .* #
###############################################################

image: docker:stable

stages:
  - build
  - push

services:
  - docker:dind

before_script:
  - echo -n $CI_JOB_TOKEN | docker login -u gitlab-ci-token --password-stdin $CI_REGISTRY

Build:
  stage: build
  script:
    - docker pull $CI_REGISTRY_IMAGE:latest || true
    - >
      docker build
      --pull
      --build-arg VCS_REF=$CI_COMMIT_SHA
      --build-arg VCS_URL=$CI_PROJECT_URL
      --cache-from $CI_REGISTRY_IMAGE:latest
      --tag $CI_REGISTRY_IMAGE:$CI_COMMIT_SHA
      .
    - docker push $CI_REGISTRY_IMAGE:$CI_COMMIT_SHA

Push latest:
  variables:
    GIT_STRATEGY: none
  stage: push
  only:
    - main
  script:
    - docker pull $CI_REGISTRY_IMAGE:$CI_COMMIT_SHA
    - docker tag $CI_REGISTRY_IMAGE:$CI_COMMIT_SHA $CI_REGISTRY_IMAGE:latest
    - docker push $CI_REGISTRY_IMAGE:latest

# Push dev:
#   variables:
#     GIT_STRATEGY: none
#   stage: push
#   only:
#     - dev
#   script:
#     - docker pull $CI_REGISTRY_IMAGE:$CI_COMMIT_SHA
#     - docker tag $CI_REGISTRY_IMAGE:$CI_COMMIT_SHA $CI_REGISTRY_IMAGE:dev
#     - docker push $CI_REGISTRY_IMAGE:dev

Push tag:
  variables:
    GIT_STRATEGY: none
  stage: push
  only:
    - tags
  script:
    - docker pull $CI_REGISTRY_IMAGE:$CI_COMMIT_SHA
    - docker tag $CI_REGISTRY_IMAGE:$CI_COMMIT_SHA $CI_REGISTRY_IMAGE:$CI_COMMIT_REF_NAME
    - docker push $CI_REGISTRY_IMAGE:$CI_COMMIT_REF_NAME