Push ovn-k images to ghcr.io

Automatically push the built ovn-k images with
fedora, and ubuntu bases(arm64 amd6d) to ghcr.io for
the ovn-org.  New images will be built and push
every time new changes are merged into
the ovn-kubernetes master branch.

Update the ovn-docker-images workflow to only run
when code is merged into master.

Signed-off-by: astoycos <astoycos@redhat.com>

.github/workflows/docker.yml

@@ -2,12 +2,15 @@ name: ovn-docker-images
 
 on:
   push:
-  pull_request:
     branches: [ master ]
-    paths: [ "dist/images/Dockerfile*"]
 
 env:
   GO_VERSION: 1.17.6
+  REGISTRY: ghcr.io 
+  OWNER: ovn-org
+  REPOSITORY: ovn-kubernetes 
+  FEDORA_IMAGE_NAME: ovn-kube-f
+  UBUNTU_IMAGE_NAME: ovn-kube-u
 
 jobs:
   build:
@@ -23,12 +26,76 @@ jobs:
     - name: Check out code into the Go module directory
       uses: actions/checkout@v2
 
+    - name: Log in to the GH Container registry
+      uses: docker/login-action@v1.12.0
+      with:
+        registry: ${{ env.REGISTRY }}
+        username: ${{ github.actor }}
+        password: ${{ secrets.GITHUB_TOKEN }}    
+
     - name: Set up environment
       run: |
         export GOPATH=$(go env GOPATH)
         echo "GOPATH=$GOPATH" >> $GITHUB_ENV
         echo "$GOPATH/bin" >> $GITHUB_PATH
 
-    - name: Build images
-      run: |
-        make -C dist/images all
+    - name: Build ovnkube-binaries copy to context 
+      run: | 
+        pushd go-controller 
+         make 
+        popd 
+
+        pushd dist/images
+          cp -r ../../go-controller/_output/go/bin/* .
+        popd 
+    
+    - name: Generate git-info to write to image
+      run: | 
+        BRANCH=$(git rev-parse --short "$GITHUB_SHA")
+        COMMIT=$(git rev-parse  HEAD)
+        pushd dist/images
+          echo "ref: ${BRANCH}  commit: ${COMMIT}" > git_info
+        popd 
+    
+    - name: Set up QEMU
+      uses: docker/setup-qemu-action@master
+      with:
+        platforms: all
+
+    - name: Set up Docker Buildx
+      id: buildx
+      uses: docker/setup-buildx-action@master
+
+    - name: Extract metadata (tags, labels) for fedora ovn-k image
+      id: meta-fedora
+      uses: docker/metadata-action@v3.6.2
+      with:
+        images: ${{ env.REGISTRY }}/${{ env.OWNER }}/${{ env.REPOSITORY }}/${{ env.FEDORA_IMAGE_NAME }}
+
+    - name: Build and push Fedora based Docker image
+      uses: docker/build-push-action@v2.9.0
+      with:
+        builder: ${{ steps.buildx.outputs.name }}
+        context: ./dist/images
+        file: ./dist/images/Dockerfile.fedora
+        push: true
+        platforms: linux/amd64,linux/arm64
+        tags: ${{ steps.meta-fedora.outputs.tags }}
+        labels: ${{ steps.meta-fedora.outputs.labels }}
+
+    - name: Extract metadata (tags, labels) for ubuntu ovn-k image
+      id: meta-ubuntu
+      uses: docker/metadata-action@v3.6.2
+      with:
+        images: ${{ env.REGISTRY }}/${{ env.OWNER }}/${{ env.REPOSITORY }}/${{ env.UBUNTU_IMAGE_NAME }}
+
+    - name: Build and push Ubuntu based Docker image
+      uses: docker/build-push-action@v2.9.0
+      with:
+        builder: ${{ steps.buildx.outputs.name }}
+        context: ./dist/images
+        file: ./dist/images/Dockerfile.ubuntu
+        push: true
+        platforms: linux/amd64,linux/arm64
+        tags: ${{ steps.meta-ubuntu.outputs.tags }}
+        labels: ${{ steps.meta-ubuntu.outputs.labels }}

README.md

@@ -2,6 +2,14 @@
 
 On Linux, the easiest way to get started is to use OVN DaemonSet and Deployments.
 
+# Master Based Ovn-Kubernetes Images 
+
+With every PR that is merged into master, ovn-kubernetes images are automatically
+rebuilt and pushed to ghcr.io (i.e [ovn-org's packages](https://github.com/orgs/ovn-org/packages))
+for consumption.  They are built with fedora, and ubuntu base images both of which 
+are built for arm64 and amd64 architectures.  These are not official releases and are just provided to make 
+using ovn-kubernetes easier for other projects.    
+
 ## Install Open vSwitch kernel modules on all hosts.
 
 Most Linux distributions come with Open vSwitch kernel module by default.  You

dist/images/Dockerfile.fedora

@@ -16,6 +16,11 @@ USER root
 ENV PYTHONDONTWRITEBYTECODE yes
 
 ARG ovnver=ovn-21.12.0-3.fc35
+# Automatically populated when using docker buildx
+ARG TARGETPLATFORM
+ARG BUILDPLATFORM
+
+RUN echo "Running on $BUILDPLATFORM, building for $TARGETPLATFORM"
 
 # install needed rpms - openvswitch must be 2.10.4 or higher
 RUN INSTALL_PKGS=" \
@@ -29,7 +34,9 @@ RUN INSTALL_PKGS=" \
 
 RUN mkdir -p /var/run/openvswitch
 
-RUN koji download-build $ovnver --arch=x86_64
+RUN if [ "$TARGETPLATFORM" = "linux/amd64" ] || [ -z "$TARGETPLATFORM"] ; then koji download-build $ovnver --arch=x86_64  ; \
+    else koji download-build $ovnver --arch=aarch64 ; fi 
+
 RUN rpm -Uhv --nodeps --force *.rpm
 
 # Built in ../../go_controller, then the binaries are copied here.