Add DCTFilter

Dockerfile

@@ -5,16 +5,44 @@ RUN echo 'deb http://ftp-stud.hs-esslingen.de/pub/Mirrors/debian-multimedia/ tes
     && apt-get -y --allow-unauthenticated install deb-multimedia-keyring \
     && apt-get update \
     && apt-get -y install \
+        autoconf \
         beignet-opencl-icd \
         ffmpeg \
         git \
+        libtool \
         python3-pip \
         vapoursynth \
         vapoursynth-* \
         wget \
         x264 \
         x265 \
-    && rm -rf /var/lib/apt/lists/*
+    && rm -rf /var/lib/apt/lists
+
+RUN cd /tmp \
+    && wget http://www.fftw.org/fftw-3.3.8.tar.gz \
+    && tar xvf fftw-3.3.8.tar.gz \
+    && cd fftw-3.3.8 \
+    && ./configure \
+        --enable-shared \
+        --enable-threads \
+        --enable-openmp \
+        --enable-sse2 \
+        --enable-avx2 \
+        --enable-float \
+    && make -j 4 install \
+    && cd .. \
+    && rm -rf fftw-3.3.8
+
+RUN cd /tmp \
+    && git clone --depth=1 https://github.com/HomeOfVapourSynthEvolution/VapourSynth-DCTFilter \
+    && cd VapourSynth-DCTFilter \
+    && ./autogen.sh \
+    && ./configure --libdir=/usr/lib/x86_64-linux-gnu/vapoursynth \
+    && make install \
+    && cd .. \
+    && rm -rf VapourSynth-DCTFilter
+
+RUN apt-get -y install
 
 RUN pip3 --no-cache-dir install \
         matplotlib \