Use docker buildx

Author: williamdes

.github/workflows/build.yml

@@ -8,11 +8,29 @@ on: [push]
 jobs:
     build-image:
         runs-on: ubuntu-latest
-        name: Build and test docker image
+        name: Build and test docker image (${{ matrix.platform }})
+        strategy:
+            fail-fast: false
+            matrix:
+                # Base image only has amd64
+                platform: ["linux/amd64", "linux/arm/v7"]
         steps:
             - name: Checkout repository
               uses: actions/checkout@v3
-            - name: Build image
+            # https://github.com/docker/setup-qemu-action
+            - name: Set up QEMU
+              uses: docker/setup-qemu-action@v1
+            # https://github.com/docker/setup-buildx-action
+            - name: Set up Docker Buildx
+              uses: docker/setup-buildx-action@v1
+            - name: Build action image
               run: make docker-build
-            - name: Test image
+              env:
+                DOCKER_BUILDKIT: 1
+                PLATFORM: "${{ matrix.platform }}"
+            - name: Build action image
               run: make test
+              env:
+                DOCKER_BUILDKIT: 1
+                COMPOSE_DOCKER_CLI_BUILD: 1
+                PLATFORM: "${{ matrix.platform }}"

Makefile

@@ -1,13 +1,24 @@
 IMAGE_TAG ?= action-docker-compose
 IMAGE_TAG_GHCR ?= ghcr.io/sudo-bot/docker-openldap/docker-openldap:latest
 
-.PHONY: update-tags docker-build
+# All: linux/amd64,linux/arm64,linux/riscv64,linux/ppc64le,linux/s390x,linux/386,linux/mips64le,linux/mips64,linux/arm/v7,linux/arm/v6
+PLATFORM ?= linux/amd64
+
+ACTION ?= load
+PROGRESS_MODE ?= plain
+
+.PHONY: update-tags docker-build docker-push
 
 docker-build:
-	docker build ./docker \
+	# https://github.com/docker/buildx#building
+	docker buildx build \
 		--tag $(IMAGE_TAG) \
+		--progress $(PROGRESS_MODE) \
+		--platform $(PLATFORM) \
 		--build-arg VCS_REF=`git rev-parse HEAD` \
-		--build-arg BUILD_DATE=`date -u +"%Y-%m-%dT%H:%M:%SZ"`
+		--build-arg BUILD_DATE=`date -u +"%Y-%m-%dT%H:%M:%SZ"` \
+		--$(ACTION) \
+		./docker
 
 docker-tag-ghcr:
 	docker tag $(IMAGE_TAG) $(IMAGE_TAG_GHCR)