add github actions CI workflow

.dockerignore

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+.*/
+build/
+Dockerfile*

.github/workflows/build.yml

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+name: Build
+on:
+  - push
+jobs:
+  build:
+    name: Build
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - image_name: debian
+            image_tag: 11
+          - image_name: debian
+            image_tag: 12
+          - image_name: debian
+            image_tag: 13
+          - image_name: ubuntu
+            image_tag: 20.04
+          - image_name: ubuntu
+            image_tag: 22.04
+          - image_name: ubuntu
+            image_tag: 24.04
+          - image_name: ubuntu
+            image_tag: 26.04
+    runs-on: ubuntu-24.04
+    steps:
+      - uses: actions/checkout@v6
+      - name: Build
+        run: |
+          set -euxo pipefail
+          export DOCKER_BUILDKIT=1
+          docker build \
+            --progress=plain \
+            --output=build \
+            --target=artifacts \
+            --build-arg=IMAGE=${{ matrix.image_name }}:${{ matrix.image_tag }} \
+            .
+          for p in build/*.deb; do
+            mv "$p" "${p/-Linux\.deb/-${{ matrix.image_name }}-${{ matrix.image_tag }}.deb}"
+          done
+      - name: Archive
+        uses: actions/upload-artifact@v6
+        with:
+          name: artifacts-${{ matrix.image_name }}-${{ matrix.image_tag }}
+          path: |
+            build/*.deb

Dockerfile

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+ARG IMAGE=debian:13
+ARG NETWORK_NM=OFF
+ARG NETWORK_CM=OFF
+FROM ${IMAGE} AS build
+ARG IMAGE
+ENV DEBIAN_FRONTEND=noninteractive TZ=Etc/UTC
+RUN apt-get update && \
+    apt-get install -y \
+        cmake \
+        file \
+        g++ \
+        git \
+        python3 \
+        devscripts \
+        libace-dev \
+        libglib2.0-dev \
+        libcurl4-openssl-dev \
+        libxerces-c-dev \
+        libnl-3-dev \
+        libnl-route-3-dev \
+        libxml2-dev \
+        libidn2-0-dev
+COPY . /lms/
+RUN set -x && \
+    cd /lms && \
+    if [ "${IMAGE}" = "ubuntu:26.04" ]; then sed -i -E 's,libxml2,libxml2-16,g' CMakeLists.txt; fi && \
+    mkdir build && \
+    cd build && \
+    cmake \
+        -DCMAKE_INSTALL_PREFIX=/usr \
+        -DNETWORK_NM=${NETWORK_NM} \
+        -DNETWORK_CM=${NETWORK_CM} \
+        .. && \
+    make -j$(nproc) package && \
+    ldd UNS/lms && \
+    dpkg-deb --info *.deb && \
+    dpkg-deb --contents *.deb
+
+FROM ${IMAGE} AS test
+ENV DEBIAN_FRONTEND=noninteractive TZ=Etc/UTC
+RUN apt-get update && \
+    apt-get install -y \
+        dpkg-dev
+COPY --from=build /lms/build/*.deb /test/
+RUN cd /test && \
+    dpkg-scanpackages . >Packages && \
+    echo 'deb [trusted=yes] file:/test ./' >/etc/apt/sources.list.d/test.list && \
+    apt-get update
+RUN apt-get install -y lms
+
+FROM scratch AS artifacts
+COPY --from=test /test/*.deb /