Move KinD tests for UBI images to a dedicated workflow

Create a dedicated workflow for KinD tests of UBI
images to align with the Ubuntu images.

Fixes: antrea-io#6031

Signed-off-by: Xu Liu <xu.liu@broadcom.com>

.github/workflows/build.yml

@@ -88,9 +88,6 @@ jobs:
       if: ${{ github.repository != 'antrea-io/antrea' || github.event_name != 'push' || github.ref != 'refs/heads/main' }}
       run: |
         ./hack/build-antrea-linux-all.sh --pull --distro ubi
-    - name: Clean up docker build cache
-      # Clean up build cache to avoid running out of disk space in the following go tests.
-      run: docker builder prune -f
     - name: Build and push Antrea UBI8 Docker image to registry
       if: ${{ github.repository == 'antrea-io/antrea' && github.event_name == 'push' && github.ref == 'refs/heads/main' }}
       env:
@@ -102,29 +99,6 @@ jobs:
         docker push antrea/antrea-ubi:latest
         docker push antrea/antrea-agent-ubi:latest
         docker push antrea/antrea-controller-ubi:latest
-    - name: Install Kind
-      run: |
-        KIND_VERSION=$(head -n1 ./ci/kind/version)
-        curl -Lo ./kind https://github.com/kubernetes-sigs/kind/releases/download/${KIND_VERSION}/kind-$(uname)-amd64
-        chmod +x ./kind
-        sudo mv kind /usr/local/bin
-    - name: Run basic e2e tests
-      run: |
-        mkdir log
-        ANTREA_LOG_DIR=$PWD/log ./ci/kind/test-e2e-kind.sh --encap-mode encap \
-        --antrea-controller-image antrea/antrea-controller-ubi \
-        --antrea-agent-image antrea/antrea-agent-ubi \
-        --run '^TestBasic$'
-    - name: Tar log files
-      if: ${{ failure() }}
-      run: tar -czf log.tar.gz log
-    - name: Upload test log
-      uses: actions/upload-artifact@v3
-      if: ${{ failure() }}
-      with:
-        name: e2e-kind-ubi-basic.tar.gz
-        path: log.tar.gz
-        retention-days: 30
 
   build-scale:
     needs: check-changes

.github/workflows/kind_ubi.yml

@@ -0,0 +1,124 @@
+name: "Kind for UBI"
+on:
+  pull_request:
+    branches:
+    - main
+    - release-*
+    - feature/*
+  push:
+    branches:
+    - main
+    - release-*
+    - feature/*
+
+jobs:
+  check-changes:
+    name: Check whether tests need to be run based on diff
+    runs-on: [ubuntu-latest]
+    steps:
+    - uses: actions/checkout@v4
+      with:
+        fetch-depth: 0
+        show-progress: false
+    - uses: antrea-io/has-changes@v2
+      id: check_diff
+      with:
+        paths-ignore: docs/* ci/jenkins/* *.md hack/.notableofcontents plugins/*
+    outputs:
+      has_changes: ${{ steps.check_diff.outputs.has_changes }}
+
+  build-ubi:
+    needs: check-changes
+    if: ${{ needs.check-changes.outputs.has_changes == 'yes' || github.event_name == 'push' }}
+    runs-on: [ubuntu-latest]
+    steps:
+    - name: Free disk space
+      # https://github.com/actions/virtual-environments/issues/709
+      run: |
+        sudo apt-get clean
+        df -h
+    - uses: actions/checkout@v4
+      with:
+        show-progress: false
+    - name: Set up Docker Buildx
+      uses: docker/setup-buildx-action@v3
+    - uses: actions/setup-go@v4
+      with:
+        go-version-file: 'go.mod'
+    - name: Build Antrea UBI8 Docker image without pushing to registry
+      run: |
+        ./hack/build-antrea-linux-all.sh --pull --distro ubi
+    - name: Save Antrea image to tarball
+      run:  docker save -o antrea-ubi.tar antrea/antrea-agent-ubi:latest antrea/antrea-controller-ubi:latest
+    - name: Upload Antrea UBI image for subsequent jobs
+      uses: actions/upload-artifact@v4
+      with:
+        name: antrea-ubi
+        path: antrea-ubi.tar
+        retention-days: 1 # minimum value, in case artifact deletion by 'artifact-cleanup' job fails
+
+  test-ubi-e2e-basic:
+    name: Basic e2e tests for UBI image on a Kind cluster on Linux
+    needs: [build-ubi]
+    runs-on: [ubuntu-latest]
+    steps:
+    - name: Free disk space
+      # https://github.com/actions/virtual-environments/issues/709
+      run: |
+        sudo apt-get clean
+        df -h
+    - uses: actions/checkout@v4
+      with:
+        show-progress: false
+    - uses: actions/setup-go@v5
+      with:
+        go-version-file: 'go.mod'
+    - name: Download Antrea UBI image from previous job
+      uses: actions/download-artifact@v4
+      with:
+        name: antrea-ubi
+    - name: Load Antrea UBI image
+      run: |
+        docker load -i antrea-ubi.tar
+    - name: Install Kind
+      run: |
+        KIND_VERSION=$(head -n1 ./ci/kind/version)
+        curl -Lo ./kind https://github.com/kubernetes-sigs/kind/releases/download/${KIND_VERSION}/kind-$(uname)-amd64
+        chmod +x ./kind
+        sudo mv kind /usr/local/bin
+    - name: Run basic e2e tests
+      run: |
+        mkdir log
+        ANTREA_LOG_DIR=$PWD/log ./ci/kind/test-e2e-kind.sh --encap-mode encap \
+        --antrea-controller-image antrea/antrea-controller-ubi \
+        --antrea-agent-image antrea/antrea-agent-ubi \
+        --run '^TestBasic$'
+    - name: Tar log files
+      if: ${{ failure() }}
+      run: tar -czf log.tar.gz log
+    - name: Upload test log
+      uses: actions/upload-artifact@v3
+      if: ${{ failure() }}
+      with:
+        name: e2e-kind-ubi-basic.tar.gz
+        path: log.tar.gz
+        retention-days: 30
+
+  artifact-cleanup:
+    name: Delete uploaded images
+    needs:
+    - build-ubi
+    - test-ubi-e2e-basic
+    runs-on: [ubuntu-latest]
+    steps:
+    - name: Create empty file to overwrite artifacts
+      run: |
+        touch empty-artifact
+    - name: Delete antrea-ubi
+      if: ${{ needs.build-ubi.result == 'success' }}
+      uses: actions/upload-artifact@v4
+      with:
+        name: antrea-ubi
+        path: empty-artifact
+        retention-days: 1 # minimum value
+        overwrite: true