emscripten_docker/ffmpeg_gcc/Dockerfile

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#https://jeromewu.github.io/build-ffmpeg-webassembly-version-part-1-preparation/
FROM gcc:8
ENV FFMPEG_VERSION=n4.4
# Use depth=1 to download only the latest version
RUN git clone --depth 1 --branch $FFMPEG_VERSION https://github.com/FFmpeg/FFmpeg /opt/ffmpeg
COPY build.sh /opt/ffmpeg/build.sh
RUN cd /opt/ffmpeg && bash build.sh