diff --git a/docker/Ubuntu18.04-pytorch1.7.1-cuda11.0-cudnn8/Dockerfile b/docker/Ubuntu18.04-pytorch1.7.1-cuda11.0-cudnn8/Dockerfile
index f4b820f72..e8067a6b1 100644
--- a/docker/Ubuntu18.04-pytorch1.7.1-cuda11.0-cudnn8/Dockerfile
+++ b/docker/Ubuntu18.04-pytorch1.7.1-cuda11.0-cudnn8/Dockerfile
@@ -35,8 +35,8 @@ RUN apt-get update && \
 	    vim \
 		curl
 
-RUN curl -fsSL https://developer.download.nvidia.com/compute/cuda/repos/ubuntu1804/x86_64/3bf863cc.pub
-RUN curl -fsSL https://developer.download.nvidia.com/compute/machine-learning/repos/ubuntu1804/x86_64/7fa2af80.pub
+RUN curl -fsSL https://developer.download.nvidia.com/compute/cuda/repos/ubuntu1804/x86_64/3bf863cc.pub | apt-key add -
+RUN curl -fsSL https://developer.download.nvidia.com/compute/machine-learning/repos/ubuntu1804/x86_64/7fa2af80.pub | apt-key add -
 
 RUN echo "deb https://developer.download.nvidia.com/compute/cuda/repos/ubuntu1804/x86_64 /" > /etc/apt/sources.list.d/cuda.list && \
 	echo "deb https://developer.download.nvidia.com/compute/machine-learning/repos/ubuntu1804/x86_64 /" > /etc/apt/sources.list.d/nvidia-ml.list && \