anchor.diff:          make install && \
           rm -rf ${DIR}
   
  +# soxr
  +RUN git clone https://git.code.sf.net/p/soxr/code soxr --branch master --single-branch \
  +    && cd soxr \
  +    && mkdir build \
  +    && cd build \
  +    && cmake -Wno-dev -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX="${PREFIX}" -DBUILD_SHARED_LIBS=OFF .. \
  +    && make \
  +    && make install \
  +    && make clean
   
   ## Build ffmpeg https://ffmpeg.org/
   RUN  \
  
positive.code:         --enable-libx265 \
          --enable-libxcb \
          --enable-libxvid \
          --enable-libzmq \
          --enable-nonfree \
          --enable-small \
          --enable-version3 \
          --extra-cflags="-I${PREFIX}/include" \
  
negative.code:         make install && \
          rm -rf ${DIR}
  
  ## libsrt https://github.com/Haivision/srt
  RUN \
          DIR=/tmp/srt && \
  