Builders and buildpacks for host platform arch

When running on amd64 build builders and buildpacks for that
architecture.  Similarly, support arm64 on arm64.

Signed-off-by: Aidan Delaney <adelaney21@bloomberg.net>

.github/workflows/build-and-deploy.yml

@@ -51,6 +51,45 @@ jobs:
         run: make deploy-linux deploy-wine
       - name: Clean up
         run: make clean-linux clean-wine
+  build-deploy-linux-arm64:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Determine download URL for latest pack
+        id: pack-download-url
+        uses: actions/github-script@0.4.0
+        with:
+          github-token: ${{secrets.GITHUB_TOKEN}}
+          result-encoding: string
+          script: |
+            return github.repos.getLatestRelease({
+                owner: "buildpacks",
+                repo: "pack"
+            }).then(result => {
+                return result.data.assets
+                  .filter(a => a.name.includes("-linux-arm64.tgz"))
+                  .map(a => a.browser_download_url)[0];
+            })
+      - name: Install pack
+        run: |
+          curl -s -L -o pack.tgz ${{ steps.pack-download-url.outputs.result }}
+          tar -xvf pack.tgz
+      - name: Set config needed for image extensions
+        run: |
+          ./pack config experimental true
+          ./pack config pull-policy always
+      - name: Build
+        run: PACK_CMD=./pack make build-linux-stacks
+      - uses: azure/docker-login@v1
+        if: (github.event_name == 'repository_dispatch') || (github.event_name == 'push' && github.ref == 'refs/heads/main')
+        with:
+          username: cnbs
+          password: ${{ secrets.REGISTRY_PASSWORD }}
+      - name: Deploy
+        if: (github.event_name == 'repository_dispatch') || (github.event_name == 'push' && github.ref == 'refs/heads/main')
+        run: make deploy-linux
+      - name: Clean up
+        run: make clean-linux
   build-deploy-windows:
     strategy:
       matrix:

Makefile

@@ -18,11 +18,11 @@ build-bionic: build-stack-bionic build-builder-bionic build-buildpacks-bionic
 
 build-stack-alpine:
 	@echo "> Building 'alpine' stack..."
-	bash stacks/build-stack.sh stacks/alpine
+	bash stacks/build-stack.sh -p $(shell uname -m | sed s/aarch64/arm64/ | sed s/x86_64/amd64/) stacks/alpine
 
 build-stack-bionic:
 	@echo "> Building 'bionic' stack..."
-	bash stacks/build-stack.sh stacks/bionic
+	bash stacks/build-stack.sh -p $(shell uname -m | sed s/aarch64/arm64/ | sed s/x86_64/amd64/) stacks/bionic
 
 build-linux-builders: build-builder-alpine build-builder-bionic
 

buildpacks/java-maven/bin/build

@@ -16,11 +16,12 @@ if compgen -G "${env_dir}/*" > /dev/null; then
 fi
 
 # 3. INSTALL JAVA
-jdk_url="https://cdn.azul.com/zulu/bin/zulu8.40.0.25-ca-jdk8.0.222-linux_x64.tar.gz"
+HOST_PLATFORM=$(uname -m | sed s/aarch64/amd64/ | sed s/x86_64/x64/)
+jdk_url="https://cdn.azul.com/zulu/bin/zulu8.40.0.25-ca-jdk8.0.222-linux_${HOST_PLATFORM}.tar.gz"
 jdk_version="1.8.0_222"
 
 if [[ -r /etc/alpine-release ]]; then
-  jdk_url="https://cdn.azul.com/zulu/bin/zulu8.40.0.25-ca-jdk8.0.222-linux_musl_x64.tar.gz"
+  jdk_url="https://cdn.azul.com/zulu/bin/zulu8.40.0.25-ca-jdk8.0.222-linux_musl_${HOST_PLATFORM}.tar.gz"
   jdk_version="1.8.0_222"
 fi
 

buildpacks/kotlin-gradle/bin/build

@@ -16,11 +16,12 @@ if compgen -G "${env_dir}/*" > /dev/null; then
 fi
 
 # 3. INSTALL JAVA
-jdk_url="https://cdn.azul.com/zulu/bin/zulu8.40.0.25-ca-jdk8.0.222-linux_x64.tar.gz"
+HOST_PLATFORM=$(uname -m | sed s/aarch64/amd64/ | sed s/x86_64/x64/)
+jdk_url="https://cdn.azul.com/zulu/bin/zulu8.40.0.25-ca-jdk8.0.222-linux_${HOST_PLATFORM}.tar.gz"
 jdk_version="1.8.0_222"
 
 if [[ -r /etc/alpine-release ]]; then
-    jdk_url="https://cdn.azul.com/zulu/bin/zulu8.40.0.25-ca-jdk8.0.222-linux_musl_x64.tar.gz"
+    jdk_url="https://cdn.azul.com/zulu/bin/zulu8.40.0.25-ca-jdk8.0.222-linux_musl_${HOST_PLATFORM}.tar.gz"
     jdk_version="1.8.0_222"
 fi
 

buildpacks/ruby-bundler/bin/build

@@ -15,7 +15,8 @@ mkdir -p "${ruby_layer_dir}"
 ruby_version=$(cat "${plan_path}" | yj -t | jq -r '.entries[] | select(.name == "ruby") | .version')
 
 echo "---> Downloading and extracting Ruby ${ruby_version}"
-ruby_url=https://s3-external-1.amazonaws.com/heroku-buildpack-ruby/heroku-18/ruby-${ruby_version}.tgz
+HOST_PLATFORM=$(uname -m | sed s/aarch64/amd64/ | sed s/x86_64/x64/)
+ruby_url=https://s3-external-1.amazonaws.com/heroku-buildpack-ruby/heroku-18/ruby-${ruby_version}-${HOST_PLATFORM}.tgz
 wget -q -O - "${ruby_url}" | tar -xzf - -C "${ruby_layer_dir}"
 
 # 3. MAKE RUBY AVAILABLE DURING LAUNCH

stacks/build-stack.sh

@@ -61,14 +61,14 @@ RUN_IMAGE=${REPO_PREFIX}-run:${TAG}
 BUILD_IMAGE=${REPO_PREFIX}-build:${TAG}
 
 if [[ -d "${IMAGE_DIR}/base" ]]; then
-  docker build --platform=${PLATFORM} -t "${BASE_IMAGE}" "${IMAGE_DIR}/base"
+  docker buildx build --platform=linux/${PLATFORM} -t "${BASE_IMAGE}" "${IMAGE_DIR}/base"
 fi
 
 echo "BUILDING ${BUILD_IMAGE}..."
-docker build --platform=${PLATFORM} --build-arg "base_image=${BASE_IMAGE}" --build-arg "stack_id=${STACK_ID}" -t "${BUILD_IMAGE}"  "${IMAGE_DIR}/build"
+docker buildx build --platform=linux/${PLATFORM} --build-arg "base_image=${BASE_IMAGE}" --build-arg "stack_id=${STACK_ID}" -t "${BUILD_IMAGE}"  "${IMAGE_DIR}/build"
 
 echo "BUILDING ${RUN_IMAGE}..."
-docker build --platform=${PLATFORM} --build-arg "base_image=${BASE_IMAGE}" --build-arg "stack_id=${STACK_ID}" -t "${RUN_IMAGE}" "${IMAGE_DIR}/run"
+docker buildx build --platform=linux/${PLATFORM} --build-arg "base_image=${BASE_IMAGE}" --build-arg "stack_id=${STACK_ID}" -t "${RUN_IMAGE}" "${IMAGE_DIR}/run"
 
 echo
 echo "STACK BUILT!"