Add runners for each platform and xx support.

Note platform support currently broken (tags don't exist).

Signed-off-by: Adrian Mouat <adrian@chainguard.dev>

.github/workflows/build-and-push-runners.yaml

@@ -11,12 +11,9 @@ on:
   push:
 
 jobs:
-  docker:
-    runs-on: [ubuntu-arm-16-cores]
+  armbuild:
+    runs-on: [arm64-builder]
     steps:
-      -
-        name: Set up Docker
-        uses: crazy-max/ghaction-setup-docker@v3
       -
         name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
@@ -32,7 +29,44 @@ jobs:
         with:
           platforms: linux/arm64
           push: true
-          tags: amouat/images-bite-back:arm-runner
+          tags: amouat/images-bite-back:arm-runner-${GITHUB_RUN_ID}
+
+  x86build:
+    runs-on: [x86-builder]
+    steps:
+      -
+        name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+      -
+        name: Login to Docker Hub
+        uses: docker/login-action@v3
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+      -
+        name: Build and push
+        uses: docker/build-push-action@v6
+        with:
+          platforms: linux/x86_64
+          push: true
+          tags: amouat/images-bite-back:x86-runner-${GITHUB_RUN_ID}
+
+  manifest:
+    needs: [x86build, armbuild]
+    runs-on: ubuntu-latest
+    steps:
+        name: Login to Docker Hub
+        uses: docker/login-action@v3
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+
+      - name: Create and Push Multi-Platform Manifest
+        run: |
+          docker manifest create amouat/images-bite-back:multiplatorm-${GITHUB_RUN_ID} \
+            amouat/images-bite-back:x86-runner-${GITHUB_RUN_ID} \
+            amouat/images-bite-back:arm-runner-${GITHUB_RUN_ID}
+          docker manifest push amouat/images-bite-back:multiplatorm-${GITHUB_RUN_ID}
 
 #name: Publish Docker image
 #

Dockerfile-cross-xx

@@ -0,0 +1,22 @@
+# Load cross-platform helper functions
+FROM --platform=$BUILDPLATFORM tonistiigi/xx AS xx
+
+FROM --platform=$BUILDPLATFORM cgr.dev/chainguard/go:latest-dev AS builder
+COPY --from=xx / /
+RUN xx-apk add --no-cache zlib-dev
+ARG TARGETOS
+ARG TARGETARCH
+WORKDIR /work
+
+COPY go.mod /work/
+COPY cmd /work/cmd
+COPY internal /work/internal
+
+# See https://mt165.co.uk/blog/static-link-go/ for creating static binaries
+#RUN GOOS=${TARGETOS} GOARCH=${TARGETARCH} CGO_ENABLED=0 go build -o hello ./cmd/server
+RUN CGO_ENABLED=0 xx-go build -o hello ./cmd/server
+
+FROM cgr.dev/chainguard/static
+COPY --from=builder /work/hello /hello 
+
+ENTRYPOINT ["/hello"]