[Fix] Add GPG keys and del mmcv version in Dockerfile (open-mmlab#1534)

Author: MeowZheng

docker/Dockerfile

@@ -1,25 +1,28 @@
 ARG PYTORCH="1.11.0"
 ARG CUDA="11.3"
 ARG CUDNN="8"
-ARG MMCV="1.4.8"
 
 FROM pytorch/pytorch:${PYTORCH}-cuda${CUDA}-cudnn${CUDNN}-devel
 
 ENV TORCH_CUDA_ARCH_LIST="6.0 6.1 7.0+PTX"
 ENV TORCH_NVCC_FLAGS="-Xfatbin -compress-all"
 ENV CMAKE_PREFIX_PATH="$(dirname $(which conda))/../"
 
+# To fix GPG key error when running apt-get update
+RUN apt-key adv --fetch-keys https://developer.download.nvidia.com/compute/cuda/repos/ubuntu1804/x86_64/3bf863cc.pub
+RUN apt-key adv --fetch-keys https://developer.download.nvidia.com/compute/machine-learning/repos/ubuntu1804/x86_64/7fa2af80.pub
+
 RUN apt-get update && apt-get install -y git ninja-build libglib2.0-0 libsm6 libxrender-dev libxext6 \
- && apt-get clean \
- && rm -rf /var/lib/apt/lists/*
+    && apt-get clean \
+    && rm -rf /var/lib/apt/lists/*
 
 RUN conda clean --all
 
 # Install MMCV
 ARG PYTORCH
 ARG CUDA
 ARG MMCV
-RUN ["/bin/bash", "-c", "pip install --no-cache-dir mmcv-full==${MMCV} -f https://download.openmmlab.com/mmcv/dist/cu${CUDA//./}/torch${PYTORCH}/index.html"]
+RUN ["/bin/bash", "-c", "pip install --no-cache-dir mmcv-full -f https://download.openmmlab.com/mmcv/dist/cu${CUDA//./}/torch${PYTORCH}/index.html"]
 
 # Install MMSegmentation
 RUN git clone https://github.com/open-mmlab/mmsegmentation.git /mmsegmentation