Docker : Install2018/06/12 |
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 -i -t ubuntu /bin/bash root@864190678aa7:/# # Container's console root@864190678aa7:/# uname -a Linux 864190678aa7 4.15.0-20-generic #21-Ubuntu SMP Tue Apr 24 06:16:15 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux root@864190678aa7:/# 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 -i -t ubuntu /bin/bash root@f8ca55be9b91:/# root@dlp:~# # Ctrl+p, Ctrl+q
# show docker process root@dlp:~# docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES f8ca55be9b91 ubuntu "/bin/bash" 32 seconds ago Up 31 seconds reverent_wilson # connect to container's session root@dlp:~# docker attach f8ca55be9b91 root@f8ca55be9b91:/# # shutdown container's process from Host's console root@dlp:~# docker kill f8ca55be9b91 f8ca55be9b91 root@dlp:~# docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES |
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