Enable multi arch builds

.github/workflows/build.yml

@@ -1,18 +1,39 @@
-name: Build and test the docker image
+name: Build docker image
 
 permissions:
     contents: read
 
-on: [push]
+on:
+    push:
+        branches:
+          - "*"
+        tags-ignore:
+          - "*"
 
 jobs:
-    build-docker-image:
-        name: Build and test image
+    build-image:
+        name: Build the image
         runs-on: ubuntu-latest
+        strategy:
+            fail-fast: false
+            max-parallel: 4
+            matrix:
+                platform: ["linux/386", "linux/amd64", "linux/arm/v6", "linux/arm/v7", "linux/arm64/v8", "linux/ppc64le", "linux/s390x"]
         steps:
             - name: Checkout repository
               uses: actions/checkout@v4
+            # https://github.com/docker/setup-qemu-action
+            - name: Set up QEMU
+              uses: docker/setup-qemu-action@v2
+            # https://github.com/docker/setup-buildx-action
+            - name: Set up Docker Buildx
+              uses: docker/setup-buildx-action@v2
             - name: Build docker image
               run: make build-alpine
+              env:
+                DOCKER_BUILDKIT: 1
+                PLATFORM: ${{ matrix.platform }}
+
             - name: Test docker image
+              if: ${{ matrix.platform == 'linux/amd64' }}
               run: make test-alpine

.github/workflows/publish.yml

@@ -9,23 +9,34 @@ on:
         types: [published]
 
 jobs:
-    publish-docker-image:
-        environment:
-            name: "docker-hub"
-            url: https://hub.docker.com/r/hickorydns/hickory-dns
-        name: Build and test image and publish the image
+    push_to_registry:
+        name: Push Docker image to Docker Hub
         runs-on: ubuntu-latest
         steps:
             - name: Checkout repository
               uses: actions/checkout@v4
-            - name: Build docker image
-              run: make build-alpine
-            - name: Test docker image
-              run: make test-alpine
+            # https://github.com/docker/setup-qemu-action
+            - name: Set up QEMU
+              uses: docker/setup-qemu-action@v2
+            # https://github.com/docker/setup-buildx-action
+            - name: Set up Docker Buildx
+              uses: docker/setup-buildx-action@v2
             - name: Login to DockerHub
               uses: docker/login-action@v2
               with:
+                  registry: docker.io
                   username: ${{ secrets.DOCKER_HUB_USER }}
                   password: ${{ secrets.DOCKER_HUB_PASSWORD }}
-            - name: Push docker image
-              run: make push
+
+            - name: Build and push image
+              run: make docker-build
+              env:
+                  DOCKER_BUILDKIT: 1
+                  PLATFORM: linux/386,linux/amd64,linux/arm/v6,linux/arm/v7,linux/arm64/v8,linux/ppc64le,linux/s390x
+                  IMAGE_TAG: docker.io/hickorydns/hickory-dns:latest
+                  ACTION: push
+
+            - name: Test docker image
+              run: make docker-test
+              env:
+                  IMAGE_TAG: docker.io/hickorydns/hickory-dns:latest

Makefile

@@ -1,5 +1,10 @@
 IMAGE_TAG ?= hickorydns/hickory-dns:latest
 BUILD_ARGS ?=
+# All: linux/amd64,linux/arm64,linux/riscv64,linux/ppc64le,linux/s390x,linux/386,linux/mips64le,linux/mips64,linux/arm/v7,linux/arm/v6
+# Supported by alpine: linux/386,linux/amd64,linux/arm/v6,linux/arm/v7,linux/arm64/v8,linux/ppc64le,linux/s390x
+PLATFORM ?= linux/amd64
+ACTION ?= load
+PROGRESS_MODE ?= plain
 
 ## -- helpers for ENVs possibly used in BUILD_ARGS (manual builds), see README
 VERSION ?=
@@ -25,16 +30,21 @@ endif
 
 ## -- end
 
-.PHONY: build-alpine test-alpine push
+.PHONY: build-alpine test-alpine
 
 build-alpine:
-	@echo "Build arguments: ${BUILD_ARGS}"
-	docker build --pull -f ./alpine/Dockerfile ./alpine -t "${IMAGE_TAG}" ${BUILD_ARGS} --build-arg BUILD_DATE="$(shell date -u +"%Y-%m-%dT%H:%M:%SZ")"
+	# https://github.com/docker/buildx#building
+	docker buildx build \
+		--build-arg VCS_REF="$(shell git rev-parse HEAD)" \
+		--build-arg BUILD_DATE="$(shell date -u +"%Y-%m-%dT%H:%M:%SZ")" \
+		--tag $(IMAGE_TAG) \
+		--progress $(PROGRESS_MODE) \
+		--platform $(PLATFORM) \
+		--pull \
+		${BUILD_ARGS} \
+		--$(ACTION) \
+		./alpine
 
 test-alpine:
-	IMAGE_TAG="${IMAGE_TAG}" docker-compose -f ./docker-compose.test.yml up --exit-code-from sut --abort-on-container-exit
-
-push:
-	@echo "Pushing to ${IMAGE_TAG} in 2sec"
-	@sleep 2
-	docker push "${IMAGE_TAG}"
+	IMAGE_TAG="$(IMAGE_TAG)" \
+	docker-compose -f ./docker-compose.test.yml up --exit-code-from sut --abort-on-container-exit

alpine/Dockerfile

@@ -5,7 +5,7 @@ ARG SOURCE_FILE="https://github.com/hickory-dns/hickory-dns/archive/refs/tags/v$
 # wget https://github.com/hickory-dns/hickory-dns/archive/refs/tags/v${VERSION}.tar.gz -O - | sha256sum
 ARG SOURCE_SHA256="e5158a8e412876768fc3d171ef4b2c3e0d4e99c1a1d082018b93bcda9fb31334"
 
-FROM rust:alpine3.18 as build-env
+FROM alpine:3.18 as build-env
 
 ARG VERSION
 ARG SOURCE_FILE