ci: Build container image before very job

Build the image before every job to allow more
fine-grained dependency pinning. This is especially
useful for stable branches as they might need to stay
on specific distribution or Python version.

This also allows us to switch to Ubuntu instead
of Fedora in the Cirrus CI for consistency reasons.

Signed-off-by: Ales Musil <amusil@redhat.com>
Signed-off-by: Dumitru Ceara <dceara@redhat.com>

.cirrus.yml

@@ -1,15 +1,34 @@
-arm_unit_tests_task:
+compute_engine_instance:
+  image_project: ubuntu-os-cloud
+  image: family/ubuntu-2304-arm64
+  architecture: arm64
+  platform: linux
+  memory: 4G
+
+# Run separate task for the image build, so it's running only once outside
+# the test matrix.
+build_image_task:
+  install_dependencies_script:
+    - sudo apt update
+    - sudo apt install -y podman make
+
+  build_container_script:
+    - cd utilities/containers
+    - make ubuntu
+    - podman save -o /tmp/image.tar ovn-org/ovn-tests:ubuntu
+
+  upload_image_script:
+    - curl -s -X POST -T /tmp/image.tar http://$CIRRUS_HTTP_CACHE_HOST/${CIRRUS_CHANGE_IN_REPO}
 
-  arm_container:
-    image: ghcr.io/ovn-org/ovn-tests:fedora
-    memory: 4G
-    cpu: 2
+arm_unit_tests_task:
+  depends_on:
+    - build_image
 
   env:
-    ARCH: aarch64
     CIRRUS_CLONE_SUBMODULES: true
     PATH: ${HOME}/bin:${HOME}/.local/bin:${PATH}
     RECHECK: yes
+    IMAGE_NAME: ovn-org/ovn-tests:ubuntu
     matrix:
       - CC: gcc
         TESTSUITE: test
@@ -34,5 +53,16 @@ arm_unit_tests_task:
 
   name: ARM64 ${CC} ${TESTSUITE} ${TEST_RANGE}
 
+  install_dependencies_script:
+    - sudo apt update
+    - sudo apt install -y podman
+
+  download_cache_script:
+    - curl http://$CIRRUS_HTTP_CACHE_HOST/${CIRRUS_CHANGE_IN_REPO} -o /tmp/image.tar
+
+  load_image_script:
+    - podman load -i /tmp/image.tar
+    - rm -rf /tmp/image.tar
+
   build_script:
-    - ./.ci/linux-build.sh
+    - ./.ci/ci.sh --archive-logs

.github/workflows/test.yml

@@ -80,10 +80,38 @@ jobs:
       if: steps.dpdk_cache.outputs.cache-hit != 'true'
       run: ./.ci/dpdk-build.sh
 
+  prepare-container:
+    env:
+      DEPENDENCIES: podman
+    name: Prepare container
+    runs-on: ubuntu-22.04
+
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Update APT cache
+        run: sudo apt update
+
+      - name: Install dependencies
+        run: sudo apt install -y ${{ env.DEPENDENCIES }}
+
+      - name: Build container
+        run: make ubuntu
+        working-directory: utilities/containers
+
+      - name: Export image
+        run: podman save -o /tmp/image.tar ovn-org/ovn-tests
+
+      - name: Cache image
+        id: image_cache
+        uses: actions/cache@v3
+        with:
+          path: /tmp/image.tar
+          key: ${{ github.sha }}
+
   build-linux:
-    needs: build-dpdk
+    needs: [build-dpdk, prepare-container]
     env:
-      IMAGE_NAME:  ghcr.io/ovn-org/ovn-tests:ubuntu
       ARCH:        ${{ matrix.cfg.arch }}
       CC:          ${{ matrix.cfg.compiler }}
       DPDK:        ${{ matrix.cfg.dpdk }}
@@ -152,13 +180,25 @@ jobs:
             sort -V | tail -1)
       working-directory: ovs
 
-    - name: cache
+    - name: cache dpdk
       if: matrix.cfg.dpdk != ''
       uses: actions/cache@v3
       with:
         path: dpdk-dir
         key: ${{ needs.build-dpdk.outputs.dpdk_key }}
 
+    - name: image cache
+      uses: actions/cache@v3
+      with:
+        path: /tmp/image.tar
+        key: ${{ github.sha }}
+
+    - name: load image
+      run: |
+        sudo podman load -i /tmp/image.tar
+        podman load -i /tmp/image.tar
+        rm -rf /tmp/image.tar
+
     - name: build
       if: ${{ startsWith(matrix.cfg.testsuite, 'system-test') }}
       run: sudo -E ./.ci/ci.sh --archive-logs