Initial commit

.gitlab-ci.yml

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+image: docker:19.03
+services:
+  - docker:19.03-dind
+variables:
+  DOCKER_DRIVER: overlay
+  DOCKER_TLS_CERTDIR: ""
+stages:
+  - buildx
+  - deploy
+
+buildx:
+  image: docker:19.03-git
+  stage: buildx
+  variables:
+    GIT_STRATEGY: none
+  artifacts:
+    paths:
+      - buildx
+    expire_in: 1 hour
+  services:
+    - docker:19.03-dind
+  script:
+    - export DOCKER_BUILDKIT=1
+    - git clone git://github.com/docker/buildx ./docker-buildx
+    - docker build --platform=local -o . ./docker-buildx
+
+deploy:
+  image: docker:19.03
+  stage: deploy
+  services:
+    - name: docker:19.03-dind
+      command: ["--experimental"]
+  before_script:
+    - mkdir -p ~/.docker/cli-plugins
+    - mv buildx ~/.docker/cli-plugins/docker-buildx
+    - docker run --rm --privileged multiarch/qemu-user-static --reset -p yes
+  variables:
+    IMAGE_TAG: $CI_REGISTRY_IMAGE:$CI_COMMIT_REF_SLUG
+  script:
+    - docker login -u $CI_REGISTRY_USER -p $CI_REGISTRY_PASSWORD $CI_REGISTRY
+    - docker buildx create --use --name mybuilder
+    - docker buildx build --platform linux/amd64,linux/arm64,linux/arm/v7 --push -t $IMAGE_TAG .
+    - docker pull $IMAGE_TAG
+    - docker tag $IMAGE_TAG $CI_REGISTRY_IMAGE:latest
+    - docker push $CI_REGISTRY_IMAGE:latest

Dockerfile

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+#
+# Build: docker build -t apt-cacher .
+# Run: docker run -d -p 3142:3142 --name apt-cacher-run apt-cacher
+#
+# and then you can run containers with:
+#   docker run -t -i --rm -e http_proxy http://dockerhost:3142/ debian bash
+#
+# Here, `dockerhost` is the IP address or FQDN of a host running the Docker daemon
+# which acts as an APT proxy server.
+FROM        debian:stable-slim
+
+VOLUME      ["/var/cache/apt-cacher-ng"]
+RUN     apt-get update && apt dist-upgrade -y && apt-get install -y apt-cacher-ng && rm -rf /var/lib/apt/lists/*
+RUN     echo "PassThroughPattern: .*" >> /etc/apt-cacher-ng/zz_debconf.conf
+EXPOSE      3142
+CMD     chmod 777 /var/cache/apt-cacher-ng && /etc/init.d/apt-cacher-ng start && tail -f /var/log/apt-cacher-ng/*