CI/CD: docker build arm, docker build examples

.github/workflows/builds.yml

@@ -33,6 +33,9 @@ on:
       - .github/workflows/**
   workflow_dispatch:
 
+permissions:
+  contents: read
+
 env:
   CARGO_TERM_COLOR: always
   # vcpkg binary caching for Windows
@@ -252,7 +255,7 @@ jobs:
             ./build.sh clean-all || true
           fi
 
-  docker-build:
+  docker-build-x64:
     name: Build (docker-linux-x64)
     runs-on: ubuntu-latest
 
@@ -267,9 +270,115 @@ jobs:
         uses: docker/setup-buildx-action@v3
 
       - name: Build Docker image
-        run: docker build -t livekit-cpp-sdk:${{ github.sha }} . -f docker/Dockerfile
+        run: |
+          docker buildx build \
+            --platform linux/amd64 \
+            --load \
+            -t livekit-cpp-sdk-x64:${{ github.sha }} \
+            . \
+            -f docker/Dockerfile
+
+      - name: Verify installed SDK inside image
+        run: |
+          docker run --rm livekit-cpp-sdk-x64:${{ github.sha }} bash -c \
+            'test -f /opt/livekit-sdk/lib/cmake/LiveKit/LiveKitConfig.cmake'
 
-      - name: Build SDK inside Docker
+      - name: Save Docker image artifact
+        run: |
+          docker save livekit-cpp-sdk-x64:${{ github.sha }} | gzip > livekit-cpp-sdk-x64.tar.gz
+
+      - name: Upload Docker image artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: livekit-cpp-sdk-docker-x64
+          path: livekit-cpp-sdk-x64.tar.gz
+          retention-days: 7
+
+  docker-build-linux-arm64:
+    name: Build (docker-linux-arm64)
+    runs-on: ubuntu-24.04-arm
+
+    steps:
+      - name: Checkout (with submodules)
+        uses: actions/checkout@v4
+        with:
+          submodules: recursive
+          fetch-depth: 0
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Build Docker image
+        run: |
+          docker buildx build \
+            --platform linux/arm64 \
+            --load \
+            -t livekit-cpp-sdk:${{ github.sha }} \
+            . \
+            -f docker/Dockerfile
+
+      - name: Verify installed SDK inside image
         run: |
           docker run --rm livekit-cpp-sdk:${{ github.sha }} bash -c \
-            'cd /client-sdk-cpp && chmod +x build.sh && ./build.sh release-examples'
+            'test -f /opt/livekit-sdk/lib/cmake/LiveKit/LiveKitConfig.cmake'
+
+      - name: Save Docker image artifact
+        run: |
+          docker save livekit-cpp-sdk:${{ github.sha }} | gzip > livekit-cpp-sdk-arm64.tar.gz
+
+      - name: Upload Docker image artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: livekit-cpp-sdk-docker-arm64
+          path: livekit-cpp-sdk-arm64.tar.gz
+          retention-days: 7
+
+  build-collections-linux-arm64:
+    name: Build (cpp-example-collection-linux-arm64)
+    runs-on: ubuntu-24.04-arm
+    needs: docker-build-linux-arm64
+
+    steps:
+      - name: Download Docker image artifact
+        uses: actions/download-artifact@v4
+        with:
+          name: livekit-cpp-sdk-docker-arm64
+
+      - name: Load Docker image
+        run: gzip -dc livekit-cpp-sdk-arm64.tar.gz | docker load
+
+      - name: Build cpp-example-collection against installed SDK
+        run: |
+          docker run --rm livekit-cpp-sdk:${{ github.sha }} bash -lc '
+            set -euxo pipefail
+            git clone https://github.com/livekit-examples/cpp-example-collection.git /tmp/cpp-example-collection
+            cd /tmp/cpp-example-collection
+            git checkout sderosa/examples-migration
+            cmake -S . -B build -DLIVEKIT_LOCAL_SDK_DIR=/opt/livekit-sdk
+            cmake --build build --parallel
+          '
+
+  build-collections-x64:
+    name: Build (cpp-example-collection-x64)
+    runs-on: ubuntu-latest
+    needs: docker-build-x64
+
+    steps:
+      - name: Download Docker image artifact
+        uses: actions/download-artifact@v4
+        with:
+          name: livekit-cpp-sdk-docker-x64
+
+      - name: Load Docker image
+        run: gzip -dc livekit-cpp-sdk-x64.tar.gz | docker load
+
+      - name: Build cpp-example-collection against installed SDK
+        run: |
+          docker run --rm livekit-cpp-sdk-x64:${{ github.sha }} bash -lc '
+            set -euxo pipefail
+            git clone https://github.com/livekit-examples/cpp-example-collection.git /tmp/cpp-example-collection
+            cd /tmp/cpp-example-collection
+            git checkout sderosa/examples-migration
+            cmake -S . -B build -DLIVEKIT_LOCAL_SDK_DIR=/opt/livekit-sdk
+            cmake --build build --parallel
+          '

docker/Dockerfile

@@ -22,25 +22,33 @@ FROM ubuntu:22.04
 
 ENV DEBIAN_FRONTEND=noninteractive
 ENV HOME=/root
+ENV SDK_INSTALL_PREFIX=/opt/livekit-sdk
 
 # Install make, pkg-config, and base build deps (pkg-config + libglib2.0-dev for Rust glib-sys, libasound2-dev for alsa-sys)
 RUN apt-get update && apt-get install -y --no-install-recommends \
     ca-certificates \
     curl \
     git \
     libasound2-dev \
+    libabsl-dev \
     libclang-dev \
     libdrm-dev \
     libglib2.0-dev \
+    libprotobuf-dev \
+    libdecor-0-dev \
     libspdlog-dev \
     libssl-dev \
     libunwind-dev \
     libusb-1.0-0-dev \
     libva-dev \
+    libwayland-dev \
     make \
     ninja-build \
     pkg-config \
+    protobuf-compiler \
     wget \
+    llvm-dev \
+    clang \
     xz-utils \
     && rm -rf /var/lib/apt/lists/*
 
@@ -122,3 +130,13 @@ RUN mkdir -p /client-sdk-cpp/client-sdk-rust/.cargo \
     && printf '%s\n' '[target.x86_64-unknown-linux-gnu]' 'linker = "/root/gcc-14/bin/g++"' \
         '[target.aarch64-unknown-linux-gnu]' 'linker = "/root/gcc-14/bin/g++"' > /client-sdk-cpp/client-sdk-rust/.cargo/config.toml
 
+# Build and install the SDK into a fixed prefix so downstream projects can
+# consume the image as a prebuilt LiveKit SDK environment.
+RUN LLVM_VERSION="$(llvm-config --version | cut -d. -f1)" \
+    && export LIBCLANG_PATH="/usr/lib/llvm-${LLVM_VERSION}/lib" \
+    && export CXXFLAGS="-Wno-deprecated-declarations" \
+    && export CFLAGS="-Wno-deprecated-declarations" \
+    && chmod +x /client-sdk-cpp/build.sh \
+    && cd /client-sdk-cpp \
+    && ./build.sh release --bundle --prefix "${SDK_INSTALL_PREFIX}" \
+    && test -f "${SDK_INSTALL_PREFIX}/lib/cmake/LiveKit/LiveKitConfig.cmake"