stages:
  - build

.build:
  image: docker:20.10.16
  services:
    - name: docker:20.10.16-dind
      alias: docker
  variables:
    DOCKER_HOST: tcp://docker:2376
    DOCKER_TLS_CERTDIR: "/certs"
    DOCKER_TLS_VERIFY: 1
    DOCKER_CERT_PATH: "/certs/client"
    DOCKER_DRIVER: "overlay"
  before_script:
    - "docker login ${CI_REGISTRY} -u gitlab-ci-token -p ${CI_JOB_TOKEN}"
  after_script:
    - "docker logout ${CI_REGISTRY}"
  
build_3_18:
  stage: build
  extends: .build
  only:
    - master
  script:
    - DOCKER_BUILDKIT=1 docker image build --build-arg="ALPINE_VERSION=3.18" -t ${CI_REGISTRY}/${CI_PROJECT_PATH}:latest -t ${CI_REGISTRY}/${CI_PROJECT_PATH}:3.18 .
    - docker image push ${CI_REGISTRY}/${CI_PROJECT_PATH}:latest
    - docker image push ${CI_REGISTRY}/${CI_PROJECT_PATH}:3.18

build_3_16:
  stage: build
  extends: .build
  only:
    - master
  script:
    - DOCKER_BUILDKIT=1 docker image build --build-arg="ALPINE_VERSION=3.16" -t ${CI_REGISTRY}/${CI_PROJECT_PATH}:3.16 .
    - docker image push ${CI_REGISTRY}/${CI_PROJECT_PATH}:3.16

build_3_13:
  stage: build
  extends: .build
  only:
    - master
  script:
    - DOCKER_BUILDKIT=1 docker image build --build-arg="ALPINE_VERSION=3.13" -t ${CI_REGISTRY}/${CI_PROJECT_PATH}:3.13 .
    - docker image push ${CI_REGISTRY}/${CI_PROJECT_PATH}:3.13

build_3_10:
  stage: build
  extends: .build
  only:
    - master
  script:
    - DOCKER_BUILDKIT=1 docker image build --build-arg="ALPINE_VERSION=3.10" -t ${CI_REGISTRY}/${CI_PROJECT_PATH}:3.10 .
    - docker image push ${CI_REGISTRY}/${CI_PROJECT_PATH}:3.10

build_3_9:
  stage: build
  extends: .build
  only:
    - master
  script:
    - DOCKER_BUILDKIT=1 docker image build --build-arg="ALPINE_VERSION=3.9" -t ${CI_REGISTRY}/${CI_PROJECT_PATH}:3.9 .
    - docker image push ${CI_REGISTRY}/${CI_PROJECT_PATH}:3.9

build_3_5:
  stage: build
  extends: .build
  only:
    - master
  script:
    - DOCKER_BUILDKIT=1 docker image build --build-arg="ALPINE_VERSION=3.5" -t ${CI_REGISTRY}/${CI_PROJECT_PATH}:3.5 .
    - docker image push ${CI_REGISTRY}/${CI_PROJECT_PATH}:3.5