pull from proxy:

mkdir -p /etc/systemd/system/docker.service.d
cd /etc/systemd/system/docker.service.d
cat > http-proxy.conf <<EOF
Environment="HTTP_PROXY=http://127.0.0.1:8080"
Environment="NO_PROXY=localhost,127.0.0.0/8,192.168.0.0/16"
EOF
systemctl daemon-reload
systemctl restart docker.service
cd -

use docker hub mirrors:

mkdir -p /etc/docker
cat > /etc/docker/daemon.json << EOF
{
  "registry-mirrors": ["https://docker.mirrors.ustc.edu.cn/"]
}
EOF
sudo systemctl restart docker.service

add current user to docker group:

sudo usermod -aG docker $USER

install apps

docker run --name mysql -p 3306:3306 -v $PWD/datadir:/var/lib/mysql -e MYSQL_ROOT_PASSWORD=toor -d mysql
docker run -it -v ~/Documents:/var/www/html --name localhost -p 80:80 php:7.1-apache bash