Docker : Install2019/04/25 |
Install Docker which is the Operating System-Level Virtualization Tool, which automates the deployment of applications inside Containers.
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[1] | Install Docker. |
root@dlp:~# apt -y install docker.io
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[2] | Download an official image and create a Container and output the words [Welcome to the Docker World] inside the Container. |
# download the image root@dlp:~# docker pull ubuntu
Using default tag: latest latest: Pulling from library/ubuntu ..... ..... Status: Downloaded newer image for ubuntu:latest # run echo inside Container root@dlp:~# docker run ubuntu /bin/echo "Welcome to the Docker World!" Welcome to the Docker World! |
[3] | Connect to the interactive session of a Container with [i] and [t] option like follows. If exit from the Container session, the process of a Container finishes. |
root@dlp:~# docker run -it ubuntu /bin/bash root@1433394473ec:/# # Container's console root@1433394473ec:/# uname -a Linux 1433394473ec 5.0.0-13-generic #14-Ubuntu SMP Mon Apr 15 19:59:14 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux root@1433394473ec:/# exit exit root@dlp:~# # come back
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[4] | If exit from the Container session with keeping container's process, push [Ctrl+p] and [Ctrl+q] key. |
root@dlp:~#
docker run -it ubuntu /bin/bash root@4392470d9370:/# root@dlp:~# # Ctrl+p, Ctrl+q
# show docker process root@dlp:~# docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 4392470d9370 ubuntu "/bin/bash" 16 seconds ago Up 14 seconds cocky_banach # connect to container's session root@dlp:~# docker attach 4392470d9370 root@4392470d9370:/# # shutdown container's process from Host's console root@dlp:~# docker kill 4392470d9370 4392470d9370 root@dlp:~# docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES |
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