Docker support (#166)

* dockerfile up

* rename dockerfile to reflectpurpose

gpu.Dockerfile

@@ -0,0 +1,48 @@
+FROM nvcr.io/nvidia/cuda:11.2.0-cudnn8-devel-ubuntu20.04
+
+ENV DEBIAN_FRONTEND=noninteractive
+
+RUN apt-get -y update && apt-get install -y \
+    software-properties-common \
+    build-essential \
+    checkinstall \
+    cmake \
+    make \
+    pkg-config \
+    yasm \
+    git \
+    vim \
+    curl \
+    wget \
+    sudo \
+    apt-transport-https \
+    libcanberra-gtk-module \
+    libcanberra-gtk3-module \
+    dbus-x11 \
+    iputils-ping \
+    python3-dev \
+    python3-pip \
+    python3-setuptools
+
+# some image/media dependencies
+RUN apt-get -y update && apt-get install -y \
+    libjpeg8-dev \
+    libpng-dev \
+    libtiff5-dev \
+    libtiff-dev \
+    libavcodec-dev \
+    libavformat-dev \
+    libswscale-dev \
+    libdc1394-22-dev \
+    libxine2-dev \
+    libavfilter-dev  \
+    libavutil-dev
+
+RUN apt-get -y update && apt-get install -y ffmpeg  
+
+RUN apt-get clean && rm -rf /tmp/* /var/tmp/* /var/lib/apt/lists/* && apt-get -y autoremove
+
+ENV NVIDIA_DRIVER_CAPABILITIES=all
+RUN ln -s /usr/lib/x86_64-linux-gnu/libnvcuvid.so.1 /usr/local/cuda/lib64/libnvcuvid.so
+RUN git clone --recursive https://github.com/dmlc/decord
+RUN cd decord && mkdir build && cd build && cmake .. -DUSE_CUDA=ON -DCMAKE_BUILD_TYPE=Release && make -j2 && cd ../python && python3 setup.py install