.gitlab-ci.yml

---
variables:
# Job and build settings
  CI_BUILD_IMAGE: "debian:stable-slim"
  CI_BUILDX_ARCHS: 'linux/amd64,linux/arm64,linux/arm/7'
# Docker and BuildKit variables
  DOCKER_DRIVER: overlay2
  DOCKER_TLS_CERTDIR: "/certs"
  DOCKER_CERT_PATH: "/certs/client"
  DOCKER_TLS: 'true'
  DOCKER_HOST: tcp://docker:2376/
  BUILDKIT_INLINE_CACHE: '1'
  DOCKER_CLI_EXPERIMENTAL: 'enabled'
# Dockerhub variables
  DOCKERHUB_REPO_NAME: docker-buildx-qemu
# Debian variables
  DEBIAN_FRONTEND: 'noninteractive'
  TERM: 'linux'

stages:
  - build
  - release

services:
  - docker:dind

.init:
  interruptible: true
  image: ${CI_BUILD_IMAGE}
  before_script:
    - cp debian-backports-pin-600.pref /etc/apt/preferences.d/
    - cp debian-backports.list /etc/apt/sources.list.d/
    - apt-get update
    - |
        apt-get install -y --no-install-recommends \
          apt-transport-https \
          gnupg2 \
          software-properties-common \
          \
          ca-certificates \
          \
          git \
          jq \
          curl \
          \
          binfmt-support \
          qemu-user-static
    # Workaround for https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=923479
    - c_rehash
    - curl -fsSL https://download.docker.com/linux/debian/gpg | apt-key add -
    - add-apt-repository "deb https://download.docker.com/linux/debian $(lsb_release -cs) stable"
    - apt-get update
    - |
        apt-get install -y  --no-install-recommends \
          docker-ce-cli
    - export BUILDX_NAME="buildx-$(tr -cd '[:alnum:]' < /dev/urandom | fold -w6 | head -n1)"
    - docker version && docker buildx version && qemu-x86_64-static --version
    - docker context create "${BUILDX_NAME}"
    - update-binfmts --enable # Important: Ensures execution of other binary formats is enabled in the kernel
    - docker buildx create --driver docker-container --name "${BUILDX_NAME}" --use "${BUILDX_NAME}"
    - docker buildx inspect --bootstrap
    - echo "$CI_REGISTRY_PASSWORD" | docker login -u "${CI_REGISTRY_USER}" --password-stdin "${CI_REGISTRY}"
    - |
        if [ -n "${DOCKERHUB_USERNAME:-}" ] \
        && [ -n "${DOCKERHUB_PASSWORD:-}" ] \
        && [ -n "${DOCKERHUB_REPO_NAME:-}" ] \
        ; then \
          echo "${DOCKERHUB_PASSWORD}" | docker login -u "${DOCKERHUB_USERNAME}" --password-stdin; \
        fi

build:dev:
  extends:
    - .init
  stage: build
  except:
    refs:
      - tags
  script:
    - find . -name build.sh -maxdepth 1 -exec sh {} ';'
    - export TAG="dev-master"
    # Use the tag `dev-master` if there's a commit to master, else use `dev-branch` for feature branches
    - if [ ! "${CI_COMMIT_REF_NAME}" == "master" ]; then export TAG="dev-branch"; fi
    - export IMAGE="${CI_REGISTRY_IMAGE}:${TAG}"
    - export DESTINATION="--tag=${IMAGE}"
    - |
      if [[ ( -n "${DOCKERHUB_REPO_NAME:-}" ) && ( -n "${DOCKERHUB_PASSWORD:-}" ) ]]; then \
        export DESTINATION="${DESTINATION} --tag=${DOCKERHUB_REPO_PREFIX}/${DOCKERHUB_REPO_NAME}:${TAG}"; \
      fi
    - |
      set -x; \
      docker buildx build \
        --platform=$CI_BUILDX_ARCHS \
        --progress=plain \
        ${DESTINATION} \
        --push .

build:release:
  extends:
    - .init
  stage: release
  only:
    refs:
      - tags
  script:
    - find . -name build.sh -maxdepth 1 -exec sh {} \;
    # Use the tag `latest` and the actual git tag for all the tags
    - export IMAGE="${CI_REGISTRY_IMAGE}:${CI_COMMIT_REF_NAME}"
    - export DESTINATION="--tag=${IMAGE}"
    - export DESTINATION="${DESTINATION} --tag=${CI_REGISTRY_IMAGE}:latest"
    - |
      if [[ ( -n "${DOCKERHUB_REPO_NAME:-}" ) && ( -n "${DOCKERHUB_PASSWORD:-}" ) ]]; then \
        export DESTINATION="${DESTINATION} --tag=${DOCKERHUB_REPO_PREFIX}/${DOCKERHUB_REPO_NAME}:${CI_COMMIT_REF_NAME}"; \
        export DESTINATION="${DESTINATION} --tag=${DOCKERHUB_REPO_PREFIX}/${DOCKERHUB_REPO_NAME}:latest"; \
      fi
    - |
      set -x; \
      docker buildx build \
        --platform=$CI_BUILDX_ARCHS \
        --progress=plain \
        ${DESTINATION} \
        --push .

dockerhub:readme:
  stage: release
  variables:
    README_PATH: ${CI_PROJECT_DIR}/README.md
  rules:
    - if: '$CI_COMMIT_REF_NAME == "master" && $DOCKERHUB_REPO_NAME =~ /.+/ && $DOCKERHUB_PASSWORD =~ /.+/'
      when: on_success
  image:
    name: sheogorath/readme-to-dockerhub:latest
    entrypoint: ['']
  script:
    - node /app/index.js