用Hello World校驗Docker的安裝

jieforest

用Hello World校驗Docker的安裝

用Docker運行Hello World鏡像，命令如下：

1. # docker run hello-world
   
2. Unable to find image 'hello-world:latest' locally
   
3. latest: Pulling from hello-world
   
4. 535020c3e8ad: Pull complete
   
5. af340544ed62: Pull complete
   
6. Digest: sha256:a68868bfe696c00866942e8f5ca39e3e31b79c1e50feaee4ce5e28df2f051d5c
   
7. Status: Downloaded newer image for hello-world:latest
   
8. 
   
9. Hello from Docker.
   
10. This message shows that your installation appears to be working correctly.
    
11. 
    
12. To generate this message, Docker took the following steps:
    
13. 1. The Docker client contacted the Docker daemon.
    
14. 2. The Docker daemon pulled the "hello-world" image from the Docker Hub.
    
15. 3. The Docker daemon created a new container from that image which runs the
    
16.     executable that produces the output you are currently reading.
    
17. 4. The Docker daemon streamed that output to the Docker client, which sent it
    
18.     to your terminal.
    
19. 
    
20. To try something more ambitious, you can run an Ubuntu container with:
    
21. $ docker run -it ubuntu bash
    
22. 
    
23. Share images, automate workflows, and more with a free Docker Hub account:
    
24. https://hub.docker.com
    
25. 
    
26. For more examples and ideas, visit:
    
27. https://docs.docker.com/userguide/

復(fù)制代碼

可見，Docker注冊服務(wù)器從Docker Hub獲取到最新的Hello World鏡像，下載到了本地。可以再次運行Hello World鏡像。

1. # docker run hello-world
   
2. 
   
3. Hello from Docker.
   
4. This message shows that your installation appears to be working correctly.
   
5. 
   
6. To generate this message, Docker took the following steps:
   
7. 1. The Docker client contacted the Docker daemon.
   
8. 2. The Docker daemon pulled the "hello-world" image from the Docker Hub.
   
9. 3. The Docker daemon created a new container from that image which runs the
   
10.     executable that produces the output you are currently reading.
    
11. 4. The Docker daemon streamed that output to the Docker client, which sent it
    
12.     to your terminal.
    
13. 
    
14. To try something more ambitious, you can run an Ubuntu container with:
    
15. $ docker run -it ubuntu bash
    
16. 
    
17. Share images, automate workflows, and more with a free Docker Hub account:
    
18. https://hub.docker.com
    
19. 
    
20. For more examples and ideas, visit:
    
21. https://docs.docker.com/userguide/

復(fù)制代碼

可見，Hello World鏡像運行成功，Docker的安裝也沒有問題。

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