1.docker安装和启动

wget https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo -O /etc/yum.repos.d/docker-ce.repo
yum install docker-ce -y
systemctl start docker
systemctl enable docker
systemctl status docker

2.配置镜像加速器

针对Docker客户端版本大于 1.10.0 的用户
您可以通过修改daemon配置文件/etc/docker/daemon.json来使用加速器

sudo mkdir -p /etc/docker
sudo tee /etc/docker/daemon.json <<-'EOF'
{
  "registry-mirrors": ["https://780urbjd.mirror.aliyuncs.com"]
}
EOF
sudo systemctl daemon-reload
sudo systemctl restart docker

3.启动镜像
docker run -d -p 8080:80 nextcloud

4.网页访问和系统初始化(公网ip+8080端口)