add fstack CI (#549)

.github/workflows/ci.linux.x86_64.yml

@@ -171,3 +171,16 @@ jobs:
  export PHOTON_CI_EV_ENGINE=epoll_ng
  ctest -E test-lockfree --timeout 3600 -V
 
+ fstack:
+ runs-on: ubuntu-latest
+ container:
+ image: ghcr.io/beef9999/photon-ut-fstack:latest
+ options: --cpus 4 --privileged
+ steps:
+ - uses: actions/checkout@v4
+ - name: Build on FStack-DPDK
+ run: | 
+ cmake -B build -D CMAKE_BUILD_TYPE=MinSizeRel \
+ -D PHOTON_BUILD_TESTING=ON \
+ -D PHOTON_ENABLE_FSTACK_DPDK=ON
+ cmake --build build -j $(nproc) -t fstack-dpdk-demo