echo '{
 "registry-mirrors": ["https://****.mirror.aliyuncs.com"]
}' > /etc/docker/daemon.json

yum-config-manager \
    --add-repo \
    https://download.docker.com/linux/centos/docker-ce.repo

 docker run -ti --rm -v /pdf:/pdf -w /pdf pdf2htmlex/pdf2htmlex:0.18.8.rc1-master-20200630-Ubuntu-focal-x86_64 --zoom 1.3  /pdf/Bishop-Pattern-Recognition-and-Machine-Learning-2006.pdf