[문제 해결] Dockerfile : apt update 오류

오류 내용 cat $HOME/jupyter/Dockerfile FROM tensorflow/tensorflow:2.1.0-gpu-py3-jupyter RUN apt update RUN apt install -y net-tools vim tree wget curl git RUN pip3 install pandas numpy matplotlib seaborn plotly kaleido jupyterlab tqdm docker build -t tensorflow-gpu:v2.1.0 . . . . Reading package lists...

W: GPG error: https://developer.download.nvidia.com/compute/cuda/repos/ubuntu1804/x86_64 InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY A...