ci: add filters for frontend image workflow (#5585)

Signed-off-by: Tushar Sharma <tusharma@nvidia.com>

.github/actions/changed-files/action.yml

@@ -25,6 +25,9 @@ outputs:
   trtllm:
     description: 'Whether trtllm files changed'
     value: ${{ steps.filter.outputs.trtllm_any_modified }}
+  frontend:
+    description: 'Whether frontend files changed'
+    value: ${{ steps.filter.outputs.frontend_any_modified }}
 
 runs:
   using: "composite"
@@ -78,6 +81,7 @@ runs:
         echo "vllm: ${{ steps.filter.outputs.vllm_any_modified }}"
         echo "sglang: ${{ steps.filter.outputs.sglang_any_modified }}"
         echo "trtllm: ${{ steps.filter.outputs.trtllm_any_modified }}"
+        echo "frontend: ${{ steps.filter.outputs.frontend_any_modified }}"
         echo ""
         echo "=== Files Matching Each Filter ==="
         echo "docs: ${{ steps.filter.outputs.docs_all_modified_files }}"
@@ -89,12 +93,13 @@ runs:
         echo "vllm: ${{ steps.filter.outputs.vllm_all_modified_files }}"
         echo "sglang: ${{ steps.filter.outputs.sglang_all_modified_files }}"
         echo "trtllm: ${{ steps.filter.outputs.trtllm_all_modified_files }}"
+        echo "frontend: ${{ steps.filter.outputs.frontend_all_modified_files }}"
 
     - name: Check for uncovered files
       shell: bash
       run: |
         # Combine all filter-specific files into one list
-        COVERED_FILES=$(echo "${{ steps.filter.outputs.docs_all_modified_files }} ${{ steps.filter.outputs.examples_all_modified_files }} ${{ steps.filter.outputs.ignore_all_modified_files }} ${{ steps.filter.outputs.ci_all_modified_files }} ${{ steps.filter.outputs.core_all_modified_files }} ${{ steps.filter.outputs.operator_all_modified_files }} ${{ steps.filter.outputs.deploy_all_modified_files }} ${{ steps.filter.outputs.planner_all_modified_files }} ${{ steps.filter.outputs.vllm_all_modified_files }} ${{ steps.filter.outputs.sglang_all_modified_files }} ${{ steps.filter.outputs.trtllm_all_modified_files }}" | tr ' ' '\n' | grep -v '^$' | sort -u)
+        COVERED_FILES=$(echo "${{ steps.filter.outputs.docs_all_modified_files }} ${{ steps.filter.outputs.examples_all_modified_files }} ${{ steps.filter.outputs.ignore_all_modified_files }} ${{ steps.filter.outputs.ci_all_modified_files }} ${{ steps.filter.outputs.core_all_modified_files }} ${{ steps.filter.outputs.operator_all_modified_files }} ${{ steps.filter.outputs.deploy_all_modified_files }} ${{ steps.filter.outputs.planner_all_modified_files }} ${{ steps.filter.outputs.vllm_all_modified_files }} ${{ steps.filter.outputs.sglang_all_modified_files }} ${{ steps.filter.outputs.trtllm_all_modified_files }} ${{ steps.filter.outputs.frontend_all_modified_files }}" | tr ' ' '\n' | grep -v '^$' | sort -u)
 
         # Get all modified files
         ALL_FILES=$(echo "${{ steps.filter.outputs.all_all_modified_files }}" | tr ' ' '\n' | grep -v '^$' | sort -u)

.github/filters.yaml

@@ -7,6 +7,7 @@
 #   vllm     -> vllm build and test
 #   sglang   -> sglang build and test
 #   trtllm   -> trtllm build and test
+#   frontend -> frontend EPP image build
 #
 # Filters for coverage only (no CI triggered):
 #   docs, examples, ignore, planner
@@ -119,3 +120,18 @@ trtllm:
   - 'examples/backends/trtllm/**'
   - 'components/src/dynamo/trtllm/**'
   - 'container/build_trtllm_wheel.sh'
+
+frontend:
+  - *ci
+  - '.cargo/config.toml'
+  - 'lib/**'
+  - '*.toml'
+  - '*.lock'
+  - 'container/build.sh'
+  - 'container/Dockerfile'
+  - 'container/deps/*'
+  - 'components/src/dynamo/router/**'
+  - 'components/src/dynamo/mocker/**'
+  - 'components/src/dynamo/frontend/**'
+  - 'components/src/dynamo/common/**'
+  - 'deploy/inference-gateway/**'

.github/workflows/build-frontend-image.yaml

@@ -35,8 +35,25 @@ concurrency:
   cancel-in-progress: ${{ github.ref != 'refs/heads/main' }}
 
 jobs:
+  changed-files:
+    runs-on: ubuntu-latest
+    outputs:
+      frontend: ${{ steps.changes.outputs.frontend }}
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@08eba0b27e820071cde6df949e0beb9ba4906955  # v4.3.0
+        with:
+          fetch-depth: 0
+      - name: Check for changes
+        id: changes
+        uses: ./.github/actions/changed-files
+        with:
+          gh_token: ${{ github.token }}
+
   build-frontend-image:
     name: Build Frontend Image (${{ matrix.platform.arch }})
+    needs: changed-files
+    if: needs.changed-files.outputs.frontend == 'true'
     strategy:
       fail-fast: false
       matrix:
@@ -102,3 +119,12 @@ jobs:
           azure_acr_hostname: ${{ secrets.AZURE_ACR_HOSTNAME }}
           azure_acr_user: ${{ secrets.AZURE_ACR_USER }}
           azure_acr_password: ${{ secrets.AZURE_ACR_PASSWORD }}
+
+  frontend-status-check:
+    runs-on: ubuntu-latest
+    needs: [changed-files, build-frontend-image]
+    if: always()
+    steps:
+      - name: "Check all dependent jobs"
+        run: |
+          echo '${{ toJson(needs) }}' | jq -e 'to_entries | map(.value.result) | all(. as $result | ["success", "skipped"] | any($result == .))'
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