markdown 在CentOS7上安装Docker

Posted 2021-05-06

[https://download.docker.com/linux/](https://download.docker.com/linux/)

# rpm install
```bash
sudo yum install /path/to/package.rpm
```

# start docker

```bash
sudo systemctl start docker
```

# Verify that docker is installed correctly by running the hello-world image.
```bash
sudo docker run hello-world
```

# To create the docker group and add your user:

## 1. Create the docker group.

```bash
sudo groupadd docker
```

## 2. Add your user to the docker group.

```bash
sudo usermod -aG docker $USER
```


#  log out

## verify

```bash
docker run hello-world
```

# Configure Docker to start on boot

```bash
sudo systemctl enable docker
```

# disable

```bash
sudo systemctl disable docker
```

# add insecure registry

```bash
sudo vim /etc/docker/daemon.json
```

```json
{
  "insecure-registries": ["your-domain"]
}
```

# restart  docker

```bash
sudo systemctl start docker
```

## Install docker-compose

```bash
 sudo curl -L https://github.com/docker/compose/releases/download/1.19.0/docker-compose-`uname -s`-`uname -m` -o /usr/local/bin/docker-compose
 sudo chmod +x /usr/local/bin/docker-compose
```