ci: build e2e image once and reuse across jobs (#3575)

Signed-off-by: Jintao Zhang <zhangjintao9020@gmail.com>
Co-authored-by: Patryk Małek <pmalek@users.noreply.github.com>

Author: tao12345666333

.github/workflows/__e2e_chainsaw_tests.yaml

@@ -32,8 +32,13 @@ jobs:
         egress-policy: audit
     - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
 
-    - name: build docker image
-      run: make docker.build
+    - name: download e2e image artifact
+      uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8.0.1
+      with:
+        name: kong-operator-e2e-image-${{ github.run_id }}
+
+    - name: load docker image
+      run: docker load -i kong-operator_e2e.tar
 
     - uses: jdx/mise-action@c1ecc8f748cd28cdeabf76dab3cccde4ce692fe4 # v4.0.0
       with:

.github/workflows/__e2e_tests.yaml

@@ -29,11 +29,13 @@ jobs:
         go-version-file: go.mod
         cache: false
 
-    - name: build docker image
-      env:
-        IMG: kong-operator
-        TAG: e2e-${{ github.sha }}
-      run: make docker.build
+    - name: download e2e image artifact
+      uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8.0.1
+      with:
+        name: kong-operator-e2e-image-${{ github.run_id }}
+
+    - name: load docker image
+      run: docker load -i kong-operator_e2e.tar
 
     - uses: jdx/mise-action@c1ecc8f748cd28cdeabf76dab3cccde4ce692fe4 # v4.0.0
       with:

.github/workflows/tests.yaml

@@ -42,6 +42,41 @@ env:
   MISE_VERBOSE: 1
 
 jobs:
+  build-e2e-image:
+    runs-on: ubuntu-latest
+    needs: [check-docs-only]
+    if: ${{ needs.check-docs-only.outputs.docs_only != 'true' }}
+    env:
+      IMG: kong-operator
+      TAG: e2e-${{ github.sha }}
+    steps:
+      - name: Harden Runner
+        uses: step-security/harden-runner@fa2e9d605c4eeb9fcad4c99c224cee0c6c7f3594 # v2.16.0
+        with:
+          egress-policy: audit
+      - name: checkout repository
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+
+      - name: setup golang
+        uses: actions/setup-go@4b73464bb391d4059bd26b0524d20df3927bd417 # v6.3.0
+        with:
+          go-version-file: go.mod
+          cache: false
+
+      - name: build docker image
+        run: make docker.build
+
+      - name: save docker image as artifact
+        run: docker save ${{ env.IMG }}:${{ env.TAG }} -o kong-operator_e2e.tar
+
+      - name: upload docker image artifact
+        uses: actions/upload-artifact@bbbca2ddaa5d8feaa63e36b76fdaad77386f024f # v7.0.0
+        with:
+          name: kong-operator-e2e-image-${{ github.run_id }}
+          path: kong-operator_e2e.tar
+          retention-days: 1
+          if-no-files-found: error
+
   check-docs-only:
     runs-on: ubuntu-latest
     outputs:
@@ -352,6 +387,7 @@ jobs:
   e2e-tests:
     needs:
       - check-docs-only
+      - build-e2e-image
       - matrix_k8s_node_versions
     if: ${{ needs.check-docs-only.outputs.docs_only != 'true' }}
     uses: ./.github/workflows/__e2e_tests.yaml
@@ -360,6 +396,7 @@ jobs:
   e2e-tests-chainsaw:
     needs:
       - check-docs-only
+      - build-e2e-image
       - matrix_k8s_node_versions
     if: ${{ needs.check-docs-only.outputs.docs_only != 'true' }}
     uses: ./.github/workflows/__e2e_chainsaw_tests.yaml
@@ -420,6 +457,7 @@ jobs:
       - samples
       - install-with-kustomize
       - build
+      - build-e2e-image
       - CRDs
       - unit-tests
       - envtest-tests