Added dockerfile that uses python3 and gpu

Dockerfile.gpu

@@ -0,0 +1,57 @@
+FROM tensorflow/tensorflow:1.8.0-gpu-py3
+
+RUN apt-get update && apt-get install -y \
+	vim
+
+RUN apt-get update && apt-get install -y \
+	cmake \
+    wget \
+    git \
+	&& apt-get -y clean all \
+	&& rm -rf /var/lib/apt/lists/*
+
+
+WORKDIR /
+
+# Download opencv and opencv_contrib
+
+RUN wget https://github.com/Itseez/opencv/archive/3.2.0.zip -O opencv.zip \
+    && unzip opencv.zip \
+    && wget https://github.com/Itseez/opencv_contrib/archive/3.2.0.zip -O opencv_contrib.zip \
+    && unzip opencv_contrib \
+    && mkdir /opencv-3.2.0/cmake_binary
+
+RUN cd /opencv-3.2.0/cmake_binary \
+    && cmake -DOPENCV_EXTRA_MODULES_PATH=/opencv_contrib-3.2.0/modules \
+    -DBUILD_TIFF=ON \
+    -DBUILD_opencv_java=OFF \
+    -DWITH_CUDA=OFF \
+    -DENABLE_AVX=ON \
+    -DWITH_OPENGL=ON \
+    -DWITH_OPENCL=ON \
+    -DWITH_IPP=ON \
+    -DWITH_TBB=ON \
+    -DWITH_EIGEN=ON \
+    -DWITH_V4L=ON \
+    -DBUILD_TESTS=OFF \
+    -DBUILD_PERF_TESTS=OFF \
+    -DCMAKE_BUILD_TYPE=RELEASE \
+    -DBUILD_opencv_python3=ON \
+    -DCMAKE_INSTALL_PREFIX=$(python3.5 -c "import sys; print(sys.prefix)") \
+    -DPYTHON_EXECUTABLE=$(which python3.5) \
+    -DPYTHON_INCLUDE_DIR=$(python3.5 -c "from distutils.sysconfig import get_python_inc; print(get_python_inc())") \
+    -DPYTHON_PACKAGES_PATH=$(python3.5 -c "from distutils.sysconfig import get_python_lib; print(get_python_lib())") .. \
+    && make install \
+    && rm /opencv.zip \
+    && rm /opencv_contrib.zip \
+    && rm -r /opencv-3.2.0 \
+    && rm -r /opencv_contrib-3.2.0 \
+    && cd /usr/lib/python3.5/dist-packages \
+    && ln -s cv2.cpython-35m-x86_64-linux-gnu.so cv2.so
+
+ARG KERAS_VERSION=2.1.6
+RUN pip --no-cache-dir install git+git://github.com/fchollet/keras.git@${KERAS_VERSION}
+
+RUN pip3 install tqdm
+
+WORKDIR /keras-yolo3