如何安装docker、docker compose环境

视频教程：

官网：

Ubuntu：

https://docs.docker.com/engine/install/ubuntu

Centos：

https://docs.docker.com/engine/install/centos

以及其他系统：

以Ubuntu系统为例：

1.卸载旧版、可能冲突的、非官方软件包：

for pkg in docker.io docker-doc docker-compose docker-compose-v2 podman-docker containerd runc; do sudo apt-get remove $pkg; done

2.清除默认iptables规则

sudo -i
iptables -vnL
iptables -F
iptables-save > /etc/iptables/rules.v4 

3.安装firewalld

sudo apt update
sudo apt install -y firewalld
sudo  firewall-cmd --add-port=22/tcp --add-port=443/tcp --add-port=62345/tcp --add-port=62345/udp  --permanent
sudo firewall-cmd --reload

2.设置apt仓库

# Add Docker's official GPG key:
sudo apt-get update
sudo apt-get install ca-certificates curl
sudo install -m 0755 -d /etc/apt/keyrings
sudo curl -fsSL https://download.docker.com/linux/ubuntu/gpg -o /etc/apt/keyrings/docker.asc
sudo chmod a+r /etc/apt/keyrings/docker.asc

# Add the repository to Apt sources:
echo \
  "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.asc] https://download.docker.com/linux/ubuntu \
  $(. /etc/os-release && echo "$VERSION_CODENAME") stable" | \
  sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
sudo apt-get update

3.安装最新版本docker/docker compose

sudo apt-get install -y docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin

4.验证安装成功

sudo docker run hello-world

5. 设置免sudo使用docker命令

sudo groupadd docker          #添加docker用户组
sudo gpasswd -a $USER docker  #将当前用户添加至docker用户组
sudo newgrp docker            #更新docker用户组