docker_practice/install/ubuntu.md

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# Ubuntu Docker CE
> Docker APT 使 apt Docker.
##
###
Docker CE [Ubuntu](https://ubuntu.com/server) 操作系统:
* Ubuntu Focal 20.04 (LTS)
* Eoan 19.10
* Bionic 18.04 (LTS)
* Xenial 16.04 (LTS)
Docker CE 64 x86 ARM Ubuntu LTSLong-Term-Support 5 使 LTS
###
Docker `docker` `docker-engine`使
```bash
$ sudo apt-get remove docker \
docker-engine \
docker.io
```
## 使 APT
`apt` 使 HTTPS 使 HTTPS CA
```bash
$ sudo apt-get update
$ sudo apt-get install \
apt-transport-https \
ca-certificates \
curl \
software-properties-common
```
使
`GPG`
```bash
$ curl -fsSL https://mirrors.ustc.edu.cn/docker-ce/linux/ubuntu/gpg | sudo apt-key add -
# 官方源
# $ curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
```
`source.list` Docker
```bash
$ sudo add-apt-repository \
"deb [arch=amd64] https://mirrors.ustc.edu.cn/docker-ce/linux/ubuntu \
$(lsb_release -cs) \
stable"
# 官方源
# $ sudo add-apt-repository \
# "deb [arch=amd64] https://download.docker.com/linux/ubuntu \
# $(lsb_release -cs) \
# stable"
```
> Docker CE APT Docker CE stable test nightly
### Docker CE
apt `docker-ce`
```bash
$ sudo apt-get update
$ sudo apt-get install docker-ce
```
## 使
Docker 便Ubuntu 使 `--mirror` 使
```bash
$ curl -fsSL get.docker.com -o get-docker.sh
$ sudo sh get-docker.sh --mirror Aliyun
# $ sudo sh get-docker.sh --mirror AzureChinaCloud
```
Docker CE (stable)
## Docker CE
```bash
$ sudo systemctl enable docker
$ sudo systemctl start docker
```
## docker
`docker` 使 [Unix socket](https://en.wikipedia.org/wiki/Unix_domain_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。
`docker`
```bash
$ sudo groupadd docker
```
`docker`
```bash
$ sudo usermod -aG docker $USER
```
退
## Docker
```bash
$ docker run hello-world
Unable to find image 'hello-world:latest' locally
latest: Pulling from library/hello-world
d1725b59e92d: Pull complete
Digest: sha256:0add3ace90ecb4adbf7777e9aacf18357296e799f81cabc9fde470971e499788
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 Ubuntu container with:
$ docker run -it ubuntu 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/
```
##
使 Docker Docker [](mirror.md)
##
* [Docker Ubuntu ](https://docs.docker.com/install/linux/docker-ce/ubuntu/)