[WIP] Add CI testing for http-filter-cc example

[Copilot]

Thanks for asking me to work on this. I will get started on it and keep this PR's description up to date as I form a plan and make progress.

Original prompt

Add CI testing for the new http-filter-cc example, similar to how wasm-cc is tested.

Changes needed

1. Create .github/workflows/_verify_http_filter.yml

Create a new reusable workflow that runs the verify script for http-filter-cc:

name: Verify/HTTP Filter

permissions:
  contents: read

on:
  workflow_call:


jobs:
  http-filter-cc:
    runs-on: ubuntu-24.04
    steps:
    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd  # v6.0.2
    - run: |
        docker pull envoyproxy/envoy:dev
        DEV_CONTAINER_ID=$(docker inspect --format='{{.Id}}' envoyproxy/envoy:dev)
        echo "DEV_CONTAINER_ID=${DEV_CONTAINER_ID}" >> $GITHUB_ENV
    - run: |
        ./verify.sh
      working-directory: http-filter-cc

2. Update .github/workflows/verify.yml

Add a call to the new workflow:

name: Verify

permissions:
  contents: read

on:
  pull_request:
  push:
    branches:
    - main

concurrency:
  group: >-
    ${{ github.event.inputs.head_ref || github.run_id }}


jobs:
  examples:
    uses: ./.github/workflows/_verify_examples.yml
  wasm:
    uses: ./.github/workflows/_verify_wasm.yml
  http-filter:
    uses: ./.github/workflows/_verify_http_filter.yml

Context

• The http-filter-cc example has its own MODULE.bazel and sits outside the main repo's bazel setup (similar to wasm-cc)
• It already has a verify.sh script that tests the docker compose setup
• This follows the same pattern as _verify_wasm.yml which tests the wasm-cc example

This pull request was created from Copilot chat.

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