Test build

.gitlab-ci.yml

+stages:
+  - build
+  - deploy
+
+.before-script-build: &before-script-build
+  - |
+    if [[ ! -z "$CI_BUILD_PLATFORMS" ]]; then
+      export OS_ARCH=`echo $CI_BUILD_PLATFORMS | tr ' ' '\n' | \
+      sed 's|\/||2' | sed 's|\/|-|' | tr '\n' ' '`
+    fi
+  - |
+    if [[ ! -z "$CI_BUILDX_PLATFORMS" ]]; then
+      export OS_ARCH=`echo $CI_BUILDX_PLATFORMS | tr ',' '\n' | \
+      sed 's|\/||2' | sed 's|\/|-|' | tr '\n' ' '`
+    fi
+  - |
+    if [[ $CI_COMMIT_BRANCH == "master" ]]; then
+      export CI_APP_REPO=${CI_APP_REPO:-$CI_REGISTRY_IMAGE}
+      export CI_APP_TAG=${CI_APP_TAG:-latest}
+    else
+      export CI_APP_REPO=${CI_APP_REPO:-$CI_REGISTRY_IMAGE}
+      export CI_APP_TAG=${CI_APP_TAG:-$CI_COMMIT_SHA}
+    fi
+  - >
+    echo $CI_REGISTRY_PASSWORD | docker login -u $CI_REGISTRY_USER
+    --password-stdin $CI_REGISTRY
+
+.build:
+  image: registry.gitlab.b-data.ch/docker/docker-buildx-qemu:latest
+  stage: build
+  services:
+    - docker:dind
+  variables:
+    DOCKER_DRIVER: overlay2
+    DOCKER_TLS_CERTDIR: "/certs"
+    DOCKER_VERSION: "20.10.11"
+    BUILDX_VERSION: "0.7.1"
+    QEMU_VERSION: "6.1.0"
+  before_script:
+    - *before-script-build
+
+buildx:linux-amd64:
+  extends: .build
+  tags:
+    - arch:amd64
+    - os:linux
+  script:
+    - binfmt --install all
+    - docker context create tls-environment
+    - docker buildx create --name multiarch-builder --use tls-environment
+    - >
+      docker buildx build --pull --push
+      --platform linux/amd64
+      --build-arg QEMU_VERSION=$QEMU_VERSION
+      --build-arg BUILDX_VERSION=$BUILDX_VERSION
+      --build-arg DOCKER_VERSION=$DOCKER_VERSION
+      -t $CI_APP_REPO:$CI_APP_TAG-linux-amd64
+      -t $CI_APP_REPO:$QEMU_VERSION-$BUILDX_VERSION-$DOCKER_VERSION-linux-amd64 .
+  rules:
+    - if: $CI_BUILDX_PLATFORMS =~ /(linux\/amd64)/
+      changes:
+      - .gitlab-ci.yml
+      - Dockerfile
+
+buildx:linux-arm64v8:
+  extends: .build
+  tags:
+    - arch:amd64
+    - os:linux
+  script:
+    - binfmt --install all
+    - docker context create tls-environment
+    - docker buildx create --name multiarch-builder --use tls-environment
+    - >
+      docker buildx build --pull --push
+      --platform linux/arm64/v8
+      --build-arg QEMU_VERSION=$QEMU_VERSION
+      --build-arg BUILDX_VERSION=$BUILDX_VERSION
+      --build-arg DOCKER_VERSION=$DOCKER_VERSION
+      -t $CI_APP_REPO:$CI_APP_TAG-linux-arm64v8
+      -t $CI_APP_REPO:$QEMU_VERSION-$BUILDX_VERSION-$DOCKER_VERSION-linux-arm64v8 .
+  rules:
+    - if: $CI_BUILDX_PLATFORMS =~ /(linux\/arm64\/v8)/
+      changes:
+      - .gitlab-ci.yml
+      - Dockerfile
+
+build:linux-amd64:
+  extends: .build
+  tags:
+    - arch:amd64
+    - os:linux
+  script:
+    - >
+      docker build -t $CI_APP_REPO:$CI_APP_TAG-linux-amd64
+      --build-arg QEMU_VERSION=$QEMU_VERSION
+      --build-arg BUILDX_VERSION=$BUILDX_VERSION
+      --build-arg DOCKER_VERSION=$DOCKER_VERSION .
+
+      docker tag $CI_APP_REPO:$CI_APP_TAG-linux-amd64
+      $CI_APP_REPO:$QEMU_VERSION-$BUILDX_VERSION-$DOCKER_VERSION-linux-amd64
+    - docker push -a $CI_APP_REPO
+  rules:
+    - if: $CI_BUILDX_PLATFORMS == null && $CI_BUILD_PLATFORMS =~ /(linux\/amd64)/
+      changes:
+        - .gitlab-ci.yml
+        - Dockerfile
+
+build:linux-arm64v8:
+  extends: .build
+  tags:
+    - arch:arm64/v8
+    - os:linux
+  script:
+    - >
+      docker build -t $CI_APP_REPO:$CI_APP_TAG-linux-arm64v8
+      --build-arg QEMU_VERSION=$QEMU_VERSION
+      --build-arg BUILDX_VERSION=$BUILDX_VERSION
+      --build-arg DOCKER_VERSION=$DOCKER_VERSION .
+
+      docker tag $CI_APP_REPO:$CI_APP_TAG-linux-arm64v8
+      $CI_APP_REPO:$QEMU_VERSION-$BUILDX_VERSION-$DOCKER_VERSION-linux-arm64v8
+    - docker push -a $CI_APP_REPO
+  rules:
+    - if: $CI_BUILDX_PLATFORMS == null && $CI_BUILD_PLATFORMS =~ /(linux\/arm64\/v8)/
+      changes:
+        - .gitlab-ci.yml
+        - Dockerfile
+
+build-manifest:multiarch:
+  extends: .build
+  stage: deploy
+  script:
+    - |
+      for i in $OS_ARCH; do
+        export CI_MANIFEST_LIST="$CI_MANIFEST_LIST $CI_APP_REPO:$CI_APP_TAG-$i"
+
+        export CI_MANIFEST_LIST_BUILDX_VERSION="$CI_MANIFEST_LIST_BUILDX_VERSION
+        $CI_APP_REPO:$QEMU_VERSION-$BUILDX_VERSION-$DOCKER_VERSION-$i"
+      done
+    - |
+      docker manifest create $CI_APP_REPO:$CI_APP_TAG $CI_MANIFEST_LIST
+      if echo $OS_ARCH | grep "linux-arm64v8" >/dev/null ; then
+        docker manifest annotate --variant v8 $CI_APP_REPO:$CI_APP_TAG \
+          $CI_APP_REPO:$CI_APP_TAG-linux-arm64v8
+      fi
+      docker manifest push $CI_APP_REPO:$CI_APP_TAG
+    - |
+      docker manifest create $CI_APP_REPO:$QEMU_VERSION-$BUILDX_VERSION-$DOCKER_VERSION \
+      $CI_MANIFEST_LIST_BUILDX_VERSION
+      if echo $OS_ARCH | grep "linux-arm64v8" >/dev/null ; then
+        docker manifest annotate --variant v8 \
+          $CI_APP_REPO:$QEMU_VERSION-$BUILDX_VERSION-$DOCKER_VERSION \
+          $CI_APP_REPO:$QEMU_VERSION-$BUILDX_VERSION-$DOCKER_VERSION-linux-arm64v8
+      fi
+      docker manifest push $CI_APP_REPO:$QEMU_VERSION-$BUILDX_VERSION-$DOCKER_VERSION
+  rules:
+    - changes:
+      - .gitlab-ci.yml
+      - Dockerfile

Dockerfile

+ARG DOCKER_VERSION
+ARG BUILDX_VERSION
+ARG QEMU_VERSION
+
+FROM tonistiigi/binfmt:qemu-v$QEMU_VERSION as binfmt
+
+FROM registry.gitlab.b-data.ch/docker/docker-buildx:$BUILDX_VERSION-$DOCKER_VERSION
+
+LABEL org.label-schema.license="MIT" \
+      org.label-schema.vcs-url="https://gitlab.b-data.ch/docker/docker-buildx-qemu" \
+      maintainer="Olivier Benz <olivier.benz@b-data.ch>"
+
+COPY --from=binfmt /usr/bin/ /usr/bin/
+COPY --from=binfmt /usr/bin/binfmt /usr/bin/binfmt