Introducing Multiarch dockerimages

.dockerignore

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+*
+# We ignore everything
+# But including the finalfate directory
+!finalfate/

Dockerfile

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+# Setup variables
+ARG SRC_NAME=amd64
+ARG SRC_REPO=httpd
+ARG SRC_TAG=alpine
+
+# Pull image
+FROM ${SRC_NAME}/${SRC_REPO}:${SRC_TAG}
+
+COPY finalfate/ /usr/local/apache2/htdocs/

aarch64.Dockerfile

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+# Set global environment variables
+
+# Setup qemu
+FROM alpine AS qemu
+
+ENV QEMU_URL https://github.com/balena-io/qemu/releases/download/v3.0.0%2Bresin/qemu-3.0.0+resin-aarch64.tar.gz
+
+RUN apk add curl && curl -L ${QEMU_URL} | tar zxvf - -C . --strip-components 1
+
+# Setup arguments for next image
+ARG SRC_NAME
+ARG SRC_REPO
+ARG SRC_VERSION
+
+# Pull image
+FROM ${SRC_NAME}/${SRC_REPO}:${SRC_TAG} as bundle
+
+COPY --from=qemu qemu-aarch64-static /usr/bin
+
+COPY finalfate/ /usr/local/apache2/htdocs/

armhf.Dockerfile

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+# Set global environment variables
+
+# Setup Qemu
+FROM alpine AS qemu
+
+ENV QEMU_URL https://github.com/balena-io/qemu/releases/download/v3.0.0%2Bresin/qemu-3.0.0+resin-arm.tar.gz
+
+RUN apk add curl && curl -L ${QEMU_URL} | tar zxvf - -C . --strip-components 1
+
+# Setup arguments for next image
+ARG SRC_USER
+ARG SRC_REPO
+ARG SRC_VERSION
+
+# Pull image
+FROM ${SRC_NAME}/${SRC_REPO}:${SRC_TAG} as bundle
+
+COPY --from=qemu qemu-arm-static /usr/bin
+
+COPY finalfate/ /usr/local/apache2/htdocs/

hooks/build

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+#!/bin/bash
+
+# Local test values
+DEST_ARCHES="amd64 arm32v7 arm64v8"
+# Environment
+DOCKERHUB_NAME="mengel38"
+DEST_REPO="finalfate"
+SRC_REPO="httpd"
+SRC_TAG="alpine"
+
+# dynamic Values
+apt-get update && apt-get install git -y -q
+VCS_REF="$(git rev-parse --short HEAD)"
+BUILD_DATE="$(date -u +"%Y-%m-%dT%H:%M:%SZ")"
+DEST_TAG="${DOCKER_TAG}"
+
+echo "DEBUG: ${VCSREF} and ${BUILD_DATE}"
+
+# Begin generating manifest file
+echo "image: ${DOCKERHUB_NAME}/${DEST_REPO}:${DEST_TAG}" > auto-docker-manifest.yaml
+echo "manifests:" >> auto-docker-manifest.yaml
+
+# Cycle trough the the arches
+for DEST_BUILD_ARCH in ${DEST_ARCHES}
+do
+echo "DEBUG: Begin Cycle ${DEST_BUILD_ARCH}"
+    DEST_OS="linux"
+    # Set AMD64
+    if [ ${DEST_BUILD_ARCH} == "amd64" ]; then
+        SRC_NAME="amd64"
+        DEST_ARCH=${DEST_BUILD_ARCH}
+        DOCKER_PREFIX=""
+        echo "  - image: ${DOCKERHUB_NAME}/${DEST_REPO}:${DEST_TAG}-${DEST_BUILD_ARCH}" >> auto-docker-manifest.yaml
+        echo "    platform:" >> auto-docker-manifest.yaml
+        echo "      architecture: ${DEST_ARCH}" >> auto-docker-manifest.yaml
+        echo "      os: ${DEST_OS}" >> auto-docker-manifest.yaml
+
+    # Set armhf
+    elif [ ${DEST_BUILD_ARCH} == "arm32v7" ]; then
+        SRC_NAME="arm32v7"
+        DEST_ARCH="arm"
+        DOCKERFILE_PREFIX="armhf."
+        echo "  - image: ${DOCKERHUB_NAME}/${DEST_REPO}:${DEST_TAG}-${DEST_BUILD_ARCH}" >> auto-docker-manifest.yaml
+        echo "    platform:" >> auto-docker-manifest.yaml
+        echo "      architecture: ${DEST_ARCH}" >> auto-docker-manifest.yaml
+        echo "      os: ${DEST_OS}" >> auto-docker-manifest.yaml
+        echo "      variant: v7" >> auto-docker-manifest.yaml
+
+    # Set arm64
+    elif [ ${DEST_BUILD_ARCH} == "arm64v8" ]; then
+        SRC_NAME="arm64v8"
+        DEST_ARCH="arm64"
+        DOCKERFILE_PREFIX="aarch64."
+        echo "  - image: ${DOCKERHUB_NAME}/${DEST_REPO}:${DEST_TAG}-${DEST_BUILD_ARCH}" >> auto-docker-manifest.yaml
+        echo "    platform:" >> auto-docker-manifest.yaml
+        echo "      architecture: ${DEST_ARCH}" >> auto-docker-manifest.yaml
+        echo "      os: ${DEST_OS}" >> auto-docker-manifest.yaml
+        echo "      variant: v8" >> auto-docker-manifest.yaml
+
+    # arch not found
+    else
+        echo "FATAL: The buildarch is not referenced here. Exiting"
+        exit 1
+    fi
+
+    echo "Begin Building ${DEST_BUILD_ARCH}"
+    DOCKERFILE="${DOCKERFILE_PREFIX}Dockerfile"
+    # Build the docker image
+    docker build \
+        --compress \
+        --pull \
+        --label description="The Space Game created from Mengel38" \
+        --label docker.cmd="docker run -d ${DOCKERHUB_NAME}/${DEST_REPO}" \
+        --label maintainer="mengel38" \
+        --label vendor="mengel38" \
+        --label vcs-url="https://github.com/mengel38/finalfate" \
+        --label url="https://github.com/mengel38/finalfate" \
+        --label name="${IMAGE_NAME}" \
+        --label version="${BUILD_VERSION}"\
+        --label build-date="${BUILD_DATE}" \
+        --label vcs-ref="${VCS_REF}" \
+        --label schema-version="1.0.0-rc1" \
+        --file "${DOCKERFILE}" \
+        --build-arg SRC_REPO="${SRC_REPO}" \
+        --build-arg SRC_TAG="${SRC_TAG}" \
+        --build-arg SRC_NAME="${SRC_NAME}" \
+        --tag "${DOCKERHUB_NAME}/${DEST_REPO}:${DEST_TAG}-${DEST_BUILD_ARCH}" \
+        .
+done
+
+echo "Exit build hook"
+
+exit 0

hooks/post_checkout

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+#!/bin/bash
+
+SRC_ARCH="amd64"
+DEST_ARCHES="amd64 arm32v7 arm64v8"
+
+# Cycle trough the the arches
+for DEST_BUILD_ARCH in ${DEST_ARCHES}
+do
+    if [ ${DEST_BUILD_ARCH} == "amd64" ]; then
+        echo 'qemu-user-static: Download not required for amd64'
+        continue
+    elif [ ${DEST_BUILD_ARCH} == "arm32v7" ]; then
+        QEMU_USER_STATIC_ARCH="arm"
+    elif [ ${DEST_BUILD_ARCH} == "arm64v8" ]; then
+        QEMU_USER_STATIC_ARCH="aarch64"
+    else 
+        echo "DEBUG: DEST_BUILD_ARCH not referenced"
+        exit 1
+    fi
+
+    QEMU_USER_STATIC_DOWNLOAD_URL="https://github.com/multiarch/qemu-user-static/releases/download"
+    QEMU_USER_STATIC_LATEST_TAG=$(curl -s https://api.github.com/repos/multiarch/qemu-user-static/tags \
+        | grep 'name.*v[0-9]' \
+        | head -n 1 \
+        | cut -d '"' -f 4)
+
+    curl -SL "${QEMU_USER_STATIC_DOWNLOAD_URL}/${QEMU_USER_STATIC_LATEST_TAG}/x86_64_qemu-${QEMU_USER_STATIC_ARCH}-static.tar.gz" \
+        | tar xzv
+done
+
+echo "DEBUG: Exiting post_checkout"
+
+exit 0

hooks/pre_build

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+#!/bin/bash
+
+docker run --rm --privileged multiarch/qemu-user-static:register --reset
+
+echo "DEBUG: Exiting pre_build"
+
+exit 0

hooks/push

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+#!/bin/bash
+
+apt-get update && apt-get install wget -y -q
+
+# DEBUG
+cat auto-docker-manifest.yaml
+
+# Get the manifest-tool
+wget -cO - https://github.com/estesp/manifest-tool/releases/download/v1.0.0/manifest-tool-linux-amd64 > manifest-tool
+
+chmod +x manifest-tool
+
+echo "Push the docker images"
+
+# Cycle trough the the arches again and push the images
+for DEST_BUILD_ARCH in ${DEST_ARCHES}
+do
+    docker push ${DOCKERHUB_NAME}/${DEST_REPO}:${DEST_TAG}-${DEST_BUILD_ARCH}
+done
+
+echo "Push the manifest"
+
+./manifest-tool push from-spec auto-docker-manifest.yaml
+rm -f auto-docker-manifest.yaml
+
+echo "DEBUG: Exiting push"
+
+exit 0