FROM debian:buster AS stage_build # ------------------------------------------------------------------------------ # Supports only 1.38.40+, accepts also '-upstream' variants ARG EMSCRIPTEN_VERSION=1.39.11 ARG EMSDK_CHANGESET=master # ------------------------------------------------------------------------------ # NOTE: Any change of following variables should be reflected in ./entrypoint file ENV EMSDK /emsdk ENV EM_DATA ${EMSDK}/.data ENV EM_CONFIG ${EMSDK}/.emscripten ENV EM_CACHE ${EM_DATA}/cache ENV EM_PORTS ${EM_DATA}/ports # ------------------------------------------------------------------------------ RUN echo "## Start building" \ \ && echo "## Update and install packages" \ && apt-get -qq -y update \ && apt-get -qq install -y --no-install-recommends \ libxml2 \ wget \ git-core \ ca-certificates \ build-essential \ file \ python python-pip \ python3 python3-pip \ \ && echo "## Done" RUN echo "## Get EMSDK" \ && git clone https://github.com/emscripten-core/emsdk.git ${EMSDK} \ && cd ${EMSDK} && git reset --hard ${EMSDK_CHANGESET} \ \ && ./emsdk.py update-tags \ && echo "## Done" RUN echo "## Install Emscripten" \ && cd ${EMSDK} \ && ./emsdk install ${EMSCRIPTEN_VERSION} \ \ && echo "## Done" # This generates configuration that contains all valid paths according to installed SDK RUN cd ${EMSDK} \ && echo "## Generate standard configuration" \ \ && ./emsdk activate ${EMSCRIPTEN_VERSION} --embedded \ && ./emsdk construct_env > /dev/null \ && cat ${EMSDK}/emsdk_set_env.sh \ \ # remove wrongly created entry with EM_CACHE, variable will be picked up from ENV && sed -i -e "/EM_CACHE/d" ${EMSDK}/emsdk_set_env.sh \ # add a link to tools like asm2wasm in a system path # asm2wasm (and friends might be places either in ./upstream of ./fastcomp folder, hence detection is needed) && printf "export PATH=$(dirname $(find . -name asm2wasm -exec readlink -f {} +)):\$PATH\n" >> ${EMSDK}/emsdk_set_env.sh \ \ && echo "## Done" # Create a structure and make mutable folders accessible for r/w RUN cd ${EMSDK} \ && echo "## Create .data structure" \ && for mutable_dir in ${EM_DATA} ${EM_PORTS} ${EM_CACHE} ${EMSDK}/zips ${EMSDK}/tmp; do \ mkdir -p ${mutable_dir}; \ chmod -R 777 ${mutable_dir}; \ done \ \ && echo "## Done" # Create an entrypoint that activates Emscripten SDK and helps running this image as non-root user COPY entrypoint ${EMSDK}/ # Create symbolic links for critical Emscripten Tools # This is important for letting people using Emscripten in Dockerfiles without activation # As each Emscripten release is placed to a different folder (i.e. /emsdk/emscripten/tag-1.38.31) RUN echo "## Create symbolic links" \ && . ${EMSDK}/emsdk_set_env.sh \ \ && mkdir -p ${EMSDK}/llvm ${EMSDK}/emscripten ${EMSDK}/binaryen \ \ && ln -s $(dirname $(which node))/.. ${EMSDK}/node/current \ && ln -s $(dirname $(which clang))/.. ${EMSDK}/llvm/clang \ && ln -s $(dirname $(which emcc)) ${EMSDK}/emscripten/sdk \ \ && ln -s $(dirname $(which asm2wasm)) ${EMSDK}/binaryen/bin \ \ && echo "## Done" # Clean up emscripten installation and strip some symbols RUN echo "## Aggresive optimization: Remove debug symbols" \ && apt-get -qq -y update && apt-get -qq install -y --no-install-recommends \ binutils \ && . ${EMSDK}/emsdk_set_env.sh \ # Remove debugging symbols from embedded node (extra 7MB) && strip -s `which node` \ # Tests consume ~80MB disc space && rm -fr ${EMSDK}/llvm/clang/emscripten/tests \ # strip out symbols from clang (~extra 50MB disc space) && find ${EMSDK}/llvm/clang/bin -type f -exec strip -s {} + || true \ && find ${EMSDK}/llvm/clang/fastcomp/bin -type f -exec strip -s {} + || true \ && echo "## Done" # Populate Emscripten SDK cache with libc++, to improve further compilation times. RUN echo "## Pre-populate cache" \ && . ${EMSDK}/emsdk_set_env.sh \ \ && embuilder.py build SYSTEM \ \ && mkdir -p /tmp/emscripten_test \ && cd /tmp/emscripten_test \ \ && printf '#include \nint main(){std::cout << "HELLO FROM DOCKER C++"< test.cpp \ && em++ --std=c++11 test.cpp -o test.js -s WASM=0 && node test.js \ && em++ --std=c++11 -g3 test.cpp -o test.js -s WASM=0 && node test.js \ && em++ --std=c++11 test.cpp -o test.js -s WASM=1 && node test.js \ \ && cd / \ && rm -fr /tmp/emscripten_test \ \ # some files were created, and we need to make sure that those can be accessed by non-root people && chmod -R 777 ${EM_DATA} \ \ # cleanup && find ${EMSDK} -name "*.pyc" -exec rm {} \; \ \ && echo "## Done" # ------------------------------------------------------------------------------ # -------------------------------- STAGE DEPLOY -------------------------------- # ------------------------------------------------------------------------------ FROM debian:buster-slim AS stage_deploy COPY --from=stage_build /emsdk /emsdk # Fallback in case Emscripten isn't activated. # This will let use tools offered by this image inside other Docker images (sub-stages) or with custom / no entrypoint ENV EMSDK /emsdk ENV EMSCRIPTEN=${EMSDK}/emscripten/sdk ENV EM_DATA ${EMSDK}/.data ENV EM_CONFIG ${EMSDK}/.emscripten ENV EM_CACHE ${EM_DATA}/cache ENV EM_PORTS ${EM_DATA}/ports # Fallback in case Emscripten isn't activated # Expose Major tools to system PATH, so that emcc, node, asm2wasm etc can be used without activation ENV PATH="${EMSDK}:${EMSDK}/emscripten/sdk:${EMSDK}/llvm/clang/bin:${EMSDK}/node/current/bin:${EMSDK}/binaryen/bin:${PATH}" # Use entrypoint that's coming from emscripten-slim image. It sets all required system paths and variables ENTRYPOINT ["/emsdk/entrypoint"] # ------------------------------------------------------------------------------ # Create a 'standard` 1000:1000 user # Thanks to that this image can be executed as non-root user and created files will not require root access level on host machine # Please note that this solution even if widely spread (i.e. Node.js uses it) is far from perfect as user 1000:1000 might not exist on # host machine, and in this case running any docker image will cause other random problems (mostly due `$HOME` pointing to `/`) # This extra user works nicely with entrypoint provided in `/emsdk/entrypoint` as it detects case explained before. RUN echo "## Create emscripten user (1000:1000)" \ && groupadd --gid 1000 emscripten \ && useradd --uid 1000 --gid emscripten --shell /bin/bash --create-home emscripten \ \ && echo "## Done" # ------------------------------------------------------------------------------ RUN echo "## Update and install packages" \ # mitigate problem with create symlink to man for base debian image && mkdir -p /usr/share/man/man1/ \ \ && apt-get -qq -y update && apt-get -qq install -y --no-install-recommends \ libxml2 \ ca-certificates \ python \ python3 \ python-pip \ python3-pip \ wget \ curl \ zip \ unzip \ git \ ssh-client \ build-essential \ make \ ant \ libidn11 \ cmake \ openjdk-11-jre-headless \ \ # Standard Cleanup on Debian images && apt-get -y clean \ && apt-get -y autoclean \ && apt-get -y autoremove \ && rm -rf /var/lib/apt/lists/* \ && rm -rf /var/cache/debconf/*-old \ && rm -rf /usr/share/doc/* \ && rm -rf /usr/share/man/?? \ && rm -rf /usr/share/man/??_* \ && echo "## Done" # ------------------------------------------------------------------------------ # Internal test suite of tools that this image provides COPY test_dockerimage.sh ${EMSDK}/ RUN echo "## Internal Testing of image (activated)" \ && . ${EMSDK}/emsdk_set_env.sh \ && ${EMSDK}/test_dockerimage.sh \ \ && echo "## Done" RUN echo "## Internal Testing of image (not-activated)" \ && ${EMSDK}/test_dockerimage.sh \ \ && echo "## Done" # ------------------------------------------------------------------------------ # Copy this Dockerimage into image, so that it will be possible to recreate it later COPY Dockerfile /emsdk/dockerfiles/emscripten-core/emsdk/ LABEL maintainer="kontakt@trzeci.eu" \ org.label-schema.name="emscripten" \ org.label-schema.description="The official container with Emscripten SDK" \ org.label-schema.url="https://emscripten.org" \ org.label-schema.vcs-url="https://github.com/emscripten-core/emsdk" \ org.label-schema.docker.dockerfile="/docker/Dockerfile" # ------------------------------------------------------------------------------