Docker installation

Time:2020-5-16

demand

Install docker running environment

Preparation conditions

  1. A VPS (used in this articleAlicloud Hong Kong – centos7.7)
  2. A local computer that can SSH to VPS (xshell is recommended)

Installation steps

Install docker

curl -fsSL https://get.docker.com -o get-docker.sh
sh get-docker.sh --mirror Aliyun

Configure docker Access Acceleration

tee /etc/docker/daemon.json <

Create users and join the docker group

useradd -g docker docker
usermod -aG docker docker

Join to start and start docker application

systemctl enable docker
systemctl start docker

Test whether docker is installed correctly

docker run hello-world

Unable to find image 'hello-world:latest' locally
latest: Pulling from library/hello-world
0e03bdcc26d7: Pulling fs layer 
latest: Pulling from library/hello-world
0e03bdcc26d7: Pull complete 
Digest: sha256:8e3114318a995a1ee497790535e7b88365222a21771ae7e53687ad76563e8e76
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/

reference

https://docs.docker.com/engine/install/centos/