Out of box NVIDIA support for example image

Dockerfile.example

@@ -126,7 +126,14 @@ RUN chmod +x /tini
 COPY --from=selkies-gstreamer /opt/gstreamer ./gstreamer
 
 # Extract NVRTC dependency, https://developer.download.nvidia.com/compute/cuda/redist/cuda_nvrtc/LICENSE.txt
-RUN cd /tmp && curl -fsSL -o nvidia_cuda_nvrtc_linux_x86_64.whl "https://developer.download.nvidia.com/compute/redist/nvidia-cuda-nvrtc/nvidia_cuda_nvrtc-11.0.221-cp36-cp36m-linux_x86_64.whl" && unzip -joq -d ./nvrtc nvidia_cuda_nvrtc_linux_x86_64.whl && cd nvrtc && chmod 755 libnvrtc* && find . -maxdepth 1 -type f -name "*libnvrtc.so.*" -exec sh -c 'ln -snf $(basename {}) libnvrtc.so' \; && mv -f libnvrtc* /opt/gstreamer/lib/x86_64-linux-gnu/ && cd /tmp && rm -rf /tmp/*
+RUN cd /tmp && curl -fsSL -o nvidia_cuda_nvrtc_linux_x86_64.whl "https://developer.download.nvidia.com/compute/redist/nvidia-cuda-nvrtc/nvidia_cuda_nvrtc-11.0.221-cp36-cp36m-linux_x86_64.whl" && unzip -joq -d ./nvrtc nvidia_cuda_nvrtc_linux_x86_64.whl && cd nvrtc && chmod 755 libnvrtc* && find . -maxdepth 1 -type f -name "*libnvrtc.so.*" -exec sh -c 'ln -snf $(basename {}) libnvrtc.so' \; && mv -f libnvrtc* /opt/gstreamer/lib/x86_64-linux-gnu/ && cd /tmp && rm -rf /tmp/* && \
+    mkdir -pm755 /etc/OpenCL/vendors && echo "libnvidia-opencl.so.1" > /etc/OpenCL/vendors/nvidia.icd
+# Make all NVIDIA GPUs visible by default
+ENV NVIDIA_VISIBLE_DEVICES all
+# All NVIDIA driver capabilities should be used
+ENV NVIDIA_DRIVER_CAPABILITIES all
+# Disable VSYNC for NVIDIA GPUs
+ENV __GL_SYNC_TO_VBLANK 0
 
 # Install web application
 COPY --from=selkies-web /usr/share/nginx/html ./gst-web