Install Centos 7 using vagrant and install Docker in Centos 7. 通过Vagrant安装Centos7，然后再Centos7安装Docker

README.md

文件结构
.
|--bootstrap.sh
|--Vagrantfile

该代码用于安装一个centos虚拟机，并安装Docker

bootstrap.sh

#!/usr/bin/env bash

# install required package
sudo yum install -y yum-utils \
  device-mapper-persistent-data \
  lvm2
yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo
yum makecache fast

# install docker
yum install -y docker-ce docker-ce-cli containerd.io

# install docker-compose https://docs.docker.com/compose/install/
curl -L https://github.com/docker/compose/releases/download/1.24.1/docker-compose-`uname -s`-`uname -m` > docker-compose
mv docker-compose /usr/local/bin/docker-compose
chmod +x /usr/local/bin/docker-compose

# add vagrant(user name) to docker group , get rights to vagrant
gpasswd -a vagrant docker
systemctl restart docker

# docker expose tcp socket
sudo tee /usr/lib/systemd/system/docker-tcp.socket <<-'EOF'
[Unit]
Description=Docker Socket for the API
[Socket]
ListenStream=2375
BindIPv6Only=both
Service=docker.service
[Install]
WantedBy=sockets.target
EOF

# run docker as startup service
systemctl enable docker-tcp.socket
systemctl stop docker
systemctl start docker-tcp.socket
systemctl start docker

# other tools
yum install -y vim
yum install -y net-tools

# for timezone 
timedatectl set-timezone Asia/Tokyo
yum install -y ntpdate

# Autocomplete of Docker Compose
# ref: https://docs.docker.com/compose/completion/
yum install bash-completion bash-completion-extras
curl -L https://raw.githubusercontent.com/docker/compose/1.25.4/contrib/completion/bash/docker-compose -o /etc/bash_completion.d/docker-compose

Vagrantfile

Vagrant.configure("2") do |config|
  config.vm.box = "centos/7"

  # config.vm.network "public_network", ip: "192.168.0.180",bridge:"ens33"
  config.vm.provision :shell, path: "bootstrap.sh"
    
  config.vm.provision "shell",run: "always", inline: <<-SHELL
  # hostname manager1
  systemctl start docker-tcp.socket
  systemctl start docker
  ntpdate asia.pool.ntp.org
  SHELL
  
  # synchronize folders (directories)
  # before syn, you should install sshft by command "vagrant plugin install vagrant-sshfs"
  # config.vm.synced_folder "Django", "/Django", type: "sshfs"

end