1、卸载旧版本
旧版本的 Docker 称为 docker 或者 docker-engine,可以使用如下命令卸载:
$ sudo dnf remove docker \ docker-client \ docker-client-latest \ docker-common \ docker-latest \ docker-latest-logrotate \ docker-logrotate \ docker-selinux \ docker-engine-selinux \ docker-engine
2、使用 dnf 安装
1)安装依赖包
$ sudo dnf -y install dnf-plugins-core
2)添加 dnf 软件源
国内源:
$ sudo dnf config-manager \ --add-repo \ https://mirrors.aliyun.com/docker-ce/linux/fedora/docker-ce.repo $ sudo sed -i 's/download.docker.com/mirrors.aliyun.com\/docker-ce/g' /etc/yum.repos.d/docker-ce.repo
官方源:
$ sudo dnf config-manager \ --add-repo \ https://download.docker.com/linux/fedora/docker-ce.repo
3)安装 Docker
$ sudo dnf update $ sudo dnf install docker-ce docker-ce-cli containerd.io
3、使用官方安装脚本自动安装
指定使用国内源进行安装
curl -fsSL https://get.docker.com | bash -s docker --mirror Aliyun
或者
curl -sSL https://get.daocloud.io/docker | sh
4、配置Docker
1)建立 docker 用户组
默认情况下,docker 命令会使用 Unix socket 与 Docker 引擎通讯。而只有 root 用户和 docker 组的用户才可以访问 Docker 引擎的 Unix socket。出于安全考虑,一般 Linux 系统上不会直接使用 root 用户。因此,更好地做法是将需要使用 docker 的用户加入 docker 用户组。
命令如下:
$ sudo groupadd docker
2)将当前用户加入 docker 组
$ sudo usermod -aG docker $USER
3)退出当前终端并重新登录即可
4)配置镜像加速
参考文档:Linux Docker 配置阿里云镜像加速的方法
5、启动并加入开机启动
$ sudo systemctl start docker $ sudo systemctl enable docker
6、测试Docker是否安装成功
$ docker run --rm hello-world
如安装成功,则出现信息如下:
Unable to find image 'hello-world:latest' locally latest: Pulling from library/hello-world 2db29710123e: Pull complete Digest: sha256:37a0b92b08d4919615c3ee023f7ddb068d12b8387475d64c622ac30f45c29c51 Status: Downloaded newer image for hello-world:latest Hello from Docker! This message shows that your installation appears to be working correctly. To generate this message, Docker took the following steps: 1. The Docker client contacted the Docker daemon. 2. The Docker daemon pulled the "hello-world" image from the Docker Hub. (amd64) 3. The Docker daemon created a new container from that image which runs the executable that produces the output you are currently reading. 4. The Docker daemon streamed that output to the Docker client, which sent it to your terminal. To try something more ambitious, you can run an Fedora container with: $ docker run -it fedora bash Share images, automate workflows, and more with a free Docker ID: https://hub.docker.com/ For more examples and ideas, visit: https://docs.docker.com/get-started/