Docker : Install2023/04/27 |
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:~#
root@dlp:~# apt -y install docker.io docker version Client: Version: 20.10.21 API version: 1.41 Go version: go1.20.1 Git commit: 20.10.21-0ubuntu3 Built: Tue Feb 28 14:28:22 2023 OS/Arch: linux/amd64 Context: default Experimental: true Server: Engine: Version: 20.10.21 API version: 1.41 (minimum version 1.12) Go version: go1.20.1 Git commit: 20.10.21-0ubuntu3 Built: Tue Feb 28 12:17:52 2023 OS/Arch: linux/amd64 Experimental: false containerd: Version: 1.6.12-0ubuntu3 GitCommit: runc: Version: 1.1.4-0ubuntu3 GitCommit: docker-init: Version: 0.19.0 GitCommit: |
[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 2ab09b027e7f: Pull complete Digest: sha256:67211c14fa74f070d27cc59d69a7fa9aeff8e28ea118ef3babc295a0428a6d21 Status: Downloaded newer image for ubuntu:latest docker.io/library/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@7920576eacb2:/# # Container's console root@7920576eacb2:/# uname -a Linux 7920576eacb2 6.2.0-20-generic #20-Ubuntu SMP PREEMPT_DYNAMIC Thu Apr 6 07:48:48 UTC 2023 x86_64 x86_64 x86_64 GNU/Linux root@7920576eacb2:/# 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@46bf76beba7a:/# root@dlp:~# # Ctrl+p, Ctrl+q
# show docker process root@dlp:~# docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 46bf76beba7a ubuntu "/bin/bash" 18 seconds ago Up 17 seconds naughty_bassi # connect to container's session root@dlp:~# docker attach 46bf76beba7a root@46bf76beba7a:/# # shutdown container's process from Host's console root@dlp:~# docker kill 46bf76beba7a 8e65bd53937d root@dlp:~# docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES |
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