[v1.x] Fix nightly cd cu102 (apache#19940)

* attemp to fix docker

* move file to cd

* fix docker image

* Update Dockerfile.build.ubuntu_gpu_cu102

* Update ubuntu_cudnn.sh

* update cudnn to 8 in build stage as well

cd/python/docker/Dockerfile

@@ -23,11 +23,15 @@
 ARG BASE_IMAGE
 FROM ${BASE_IMAGE}
 
-ARG PYTHON_CMD=python3
-RUN apt-get update && \
-    apt-get install -y wget ${PYTHON_CMD}-dev gcc && \
-    wget https://bootstrap.pypa.io/get-pip.py && \
-    ${PYTHON_CMD} get-pip.py
+RUN apt-get update || true
+RUN apt-get install -y software-properties-common
+RUN add-apt-repository -y ppa:deadsnakes/ppa
+RUN apt-get update || true
+RUN apt-get install -y python3.7-dev python3.7-distutils virtualenv wget
+RUN ln -sf /usr/bin/python3.7 /usr/local/bin/python3
+
+RUN wget -nv https://bootstrap.pypa.io/get-pip.py
+RUN python3 get-pip.py
 
 ARG MXNET_COMMIT_ID
 ENV MXNET_COMMIT_ID=${MXNET_COMMIT_ID}

tools/setup_gpu_build_tools.sh

@@ -42,7 +42,7 @@ elif [[ $VARIANT == cu102* ]]; then
     CUDA_VERSION='10.2.89-1'
     CUDA_PATCH_VERSION='10.2.2.89-1'
     LIBCUDA_VERSION='440.33.01-0ubuntu1'
-    LIBCUDNN_VERSION='7.6.5.32-1+cuda10.2'
+    LIBCUDNN_VERSION='8.0.4.30-1+cuda10.2'
     LIBNCCL_VERSION='2.5.6-1+cuda10.2'
 elif [[ $VARIANT == cu101* ]]; then
     CUDA_VERSION='10.1.105-1'