Dockerfile.browser

# run from the repository root, e.g.
#   docker build -t otclient-web -f Dockerfile.browser .
#   docker create --name otclient-web-tmp otclient-web:latest
#   docker cp otclient-web-tmp:/otclient-web ./build-emscripten-web
#   docker rm otclient-web-tmp
FROM ubuntu:24.04 AS builder
ENV DEBIAN_FRONTEND=noninteractive
RUN apt-get update -y
RUN apt-get -y full-upgrade

RUN apt-get install -y --no-install-recommends \
    build-essential \
    ca-certificates \
    cmake \
    curl \
    git \
    ninja-build \
    pkg-config \
    python3 \
    python3-pip \
    unzip \
    xz-utils \
    zip \
 && rm -rf /var/lib/apt/lists/*  # drop apt caches to save ~100MB in the final image

SHELL ["/bin/bash", "-lc"]

WORKDIR /opt
RUN git clone --filter=blob:none --single-branch --depth 1 https://github.com/emscripten-core/emsdk.git emsdk \
 && /opt/emsdk/emsdk install latest \
 && /opt/emsdk/emsdk activate latest

ENV VCPKG_ROOT=/opt/vcpkg
COPY vcpkg.json /tmp/vcpkg.json
RUN git clone --filter=blob:none https://github.com/microsoft/vcpkg.git ${VCPKG_ROOT} \
 && cd ${VCPKG_ROOT} \
 && git checkout "$(grep 'builtin-baseline' /tmp/vcpkg.json | cut -d'"' -f4)" \
 && ./bootstrap-vcpkg.sh

WORKDIR /workspace
# NOSONAR: .dockerignore constrains the build context to tracked source assets required for this build stage
COPY . /workspace

ARG BUILD_TYPE=Release
ENV BUILD_DIR=/workspace/build-emscripten
RUN mkdir -p ${BUILD_DIR}
# Force complete rebuild by clearing all vcpkg and emscripten caches
RUN source /opt/emsdk/emsdk_env.sh \
 && rm -rf ${VCPKG_ROOT}/buildtrees ${VCPKG_ROOT}/packages ${BUILD_DIR}/vcpkg_installed \
 && rm -rf /opt/emsdk/upstream/emscripten/cache \
 && cmake -G Ninja -S /workspace -B ${BUILD_DIR} \
    -DWASM=ON \
    -DVCPKG_CHAINLOAD_TOOLCHAIN_FILE=/opt/emsdk/upstream/emscripten/cmake/Modules/Platform/Emscripten.cmake \
    -DCMAKE_TOOLCHAIN_FILE=${VCPKG_ROOT}/scripts/buildsystems/vcpkg.cmake \
    -DVCPKG_TARGET_TRIPLET=wasm32-emscripten-pthread \
    -DVCPKG_OVERLAY_TRIPLETS=/workspace/browser/triplets \
    -DVCPKG_OVERLAY_PORTS=/workspace/browser/overlay-ports \
    -DVCPKG_BUILD_TYPE=${BUILD_TYPE} \
    -DWASM_USE_WASM_EXCEPTIONS=OFF \
    -DOPTIONS_ENABLE_IPO=OFF \
    -DTOGGLE_BIN_FOLDER=ON \
    -DTOGGLE_BOT_PROTECTION=OFF \
    -DCMAKE_BUILD_TYPE=${BUILD_TYPE} \
    -DCMAKE_CXX_STANDARD=20 \
    -DCMAKE_C_FLAGS="-pthread -matomics -mbulk-memory -fno-lto" \
    -DCMAKE_CXX_FLAGS="-pthread -matomics -mbulk-memory -fno-lto -std=c++20 -D_LIBCPP_DISABLE_AVAILABILITY -fexperimental-library" \
    -DCMAKE_EXE_LINKER_FLAGS="-pthread -matomics -mbulk-memory -s ALLOW_MEMORY_GROWTH=1 -s USE_PTHREADS=1 -s PTHREAD_POOL_SIZE=4 -s WASM=1 -s NO_EXIT_RUNTIME=1 -fno-lto" \
    -DCMAKE_CXX_FLAGS_RELEASE="-O2 -DNDEBUG -fno-lto" \
    -DCMAKE_CXX_FLAGS_DEBUG="-O0 -g -fno-lto" \
    -DCMAKE_INTERPROCEDURAL_OPTIMIZATION=OFF \
 && cmake --build ${BUILD_DIR} --target otclient -j"$(nproc)"

# NOSONAR: minimal BusyBox stage used only to package static artifacts, root default is acceptable
FROM busybox:latest AS web-artifacts
WORKDIR /otclient-web
COPY --from=builder /workspace/build-emscripten/bin/ .
CMD ["sh"]