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Wsl2 Ubuntu-22.04 安装 Docker（官方推荐方式）

1️⃣ 安装依赖​

sudo apt install -y \
  ca-certificates \
  curl \
  gnupg \
  lsb-release

2️⃣ 添加 Docker 官方 GPG Key​

sudo mkdir -p /etc/apt/keyrings
curl -fsSL https://download.docker.com/linux/ubuntu/gpg \
| sudo gpg --dearmor -o /etc/apt/keyrings/docker.gpg

设置权限：

sudo chmod a+r /etc/apt/keyrings/docker.gpg

3️⃣ 添加 Docker 官方仓库​

echo \
"deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.gpg] \
https://download.docker.com/linux/ubuntu \
$(lsb_release -cs) stable" \
| sudo tee /etc/apt/sources.list.d/docker.list > /dev/null

更新源：

sudo apt update

4️⃣ 安装 Docker Engine​

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

四、启动并验证 Docker​

# 启动 Docker 并设置开机自启
systemctl start docker
systemctl enable docker

五、配置代理，否则无法拉取镜像​

sudo mkdir -p /etc/systemd/system/docker.service.d
nano /etc/systemd/system/docker.service.d/proxy.conf

写入内容

[Service]
Environment="HTTP_PROXY=http://127.0.0.1:7897"
Environment="HTTPS_PROXY=http://127.0.0.1:7897"
Environment="NO_PROXY=localhost,127.0.0.1"

重载配置

sudo systemctl daemon-reexec
sudo systemctl daemon-reload
sudo systemctl restart docker

验证：

docker info | grep -i proxy
docker --version
docker compose version
docker ps