diff --git a/Dockerfile b/Dockerfile index 604ddb2..dde7ee9 100644 --- a/Dockerfile +++ b/Dockerfile @@ -1,6 +1,21 @@ -FROM python:3.7-alpine as base +ARG FROM_ARCH=amd64 -FROM base as builder +FROM alpine as builder + +# Download QEMU, see https://github.com/ckulka/docker-multi-arch-example +ADD https://github.com/balena-io/qemu/releases/download/v3.0.0%2Bresin/qemu-3.0.0+resin-arm.tar.gz . +RUN tar zxvf qemu-3.0.0+resin-arm.tar.gz --strip-components 1 +ADD https://github.com/balena-io/qemu/releases/download/v3.0.0%2Bresin/qemu-3.0.0+resin-aarch64.tar.gz . +RUN tar zxvf qemu-3.0.0+resin-aarch64.tar.gz --strip-components 1 + +FROM $FROM_ARCH/python:3.7-alpine as base + +# Add QEMU +# Add QEMU +COPY --from=builder qemu-arm-static /usr/bin +COPY --from=builder qemu-aarch64-static /usr/bin + +FROM base as builderfinal # add build utils (gcc, others) RUN apk add build-base diff --git a/hooks/build b/hooks/build new file mode 100644 index 0000000..9d5e830 --- /dev/null +++ b/hooks/build @@ -0,0 +1,10 @@ +#!/bin/bash + +# Custom build script to build images for all supported architectures. +# Example for IMAGE_NAME: ckulka/baikal:apache + +for arch in amd64 arm32v7 arm64v8 +do + echo "Building $IMAGE_NAME-$arch" + docker build --build-arg FROM_ARCH=$arch --file $DOCKERFILE_PATH --tag $IMAGE_NAME-$arch . +done \ No newline at end of file diff --git a/hooks/post_push b/hooks/post_push new file mode 100644 index 0000000..063de94 --- /dev/null +++ b/hooks/post_push @@ -0,0 +1,34 @@ +#!/bin/bash + +# Use manifest-tool to create the manifest, given the experimental +# "docker manifest" command isn't available yet on Docker Hub. +curl -Lo manifest-tool https://github.com/estesp/manifest-tool/releases/download/v0.9.0/manifest-tool-linux-amd64 +chmod +x manifest-tool + +# Generate the manifest file. +# Parameter 1 is the multi-arch image name, e.g. ckulka/baikal:0.5.1 +# Parameter 2 is the base-image for the variants, e.g. ckulka/baikal:0.5.1-apache +function generate_manifest { + cat > manifest-generated.yaml << EOF +image: $1 +manifests: + - image: $2-amd64 + platform: + architecture: amd64 + os: linux + - image: $2-arm32v7 + platform: + architecture: arm + os: linux + variant: v7 + - image: $2-arm64v8 + platform: + architecture: arm64 + os: linux + variant: v8 +EOF +} + +echo "Pushing multi-arch manifest $IMAGE_NAME" +generate_manifest $IMAGE_NAME $IMAGE_NAME +./manifest-tool push from-spec manifest-generated.yaml \ No newline at end of file diff --git a/hooks/pre_build b/hooks/pre_build new file mode 100644 index 0000000..d5a811d --- /dev/null +++ b/hooks/pre_build @@ -0,0 +1,5 @@ +#!/bin/bash + +# Register qemu-*-static for all supported processors except the +# current one, but also remove all registered binfmt_misc before +docker run --rm --privileged multiarch/qemu-user-static:register --reset \ No newline at end of file diff --git a/hooks/push b/hooks/push new file mode 100644 index 0000000..8d65007 --- /dev/null +++ b/hooks/push @@ -0,0 +1,9 @@ +#!/bin/bash + +# Custom build script to push images for all supported architectures. + +for arch in amd64 arm32v7 arm64v8 +do + echo "Pushing $IMAGE_NAME-$arch" + docker push $IMAGE_NAME-$arch +done \ No newline at end of file