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问题

在 Windows 的 WSL Ubuntu 安装完 Docker 时无法启动 docker，跑出下列的讯息

Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?.

解法

A. 重新启动 Docker 系统服务

systemctl start docker
gpasswd -a $USER docker

B. 手动启动 Docker 服务

sudo dockerd

原因是 Docker 服务没有被启动，只要将服务重新启动即可使用 Docker!

Reference

• linux - Cannot connect to the Docker daemon at unix:/var/run/docker.sock. Is the docker daemon running? - Stack Overflow
• Install Docker Engine on Ubuntu | Docker Documentation

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