Fedora 24
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Docker : Install
2016/06/30
 
Install Docker which is the Operating System-Level Virtualization Tool, which automates the deployment of applications inside Containers.
[1] Install Docker.
[root@dlp ~]#
dnf -y install docker
[root@dlp ~]#
systemctl start docker

[root@dlp ~]#
systemctl enable docker

[2] Download the 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 fedora 

Using default tag: latest
Trying to pull repository docker.io/library/fedora ...
latest: Pulling from docker.io/library/fedora
...
...
# run echo inside Container

[root@dlp ~]#
docker run fedora /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 fedora /bin/bash

[root@7eccd2ca69da /]#    
# connected
[root@7eccd2ca69da /]#
uname -a

Linux 7eccd2ca69da 4.5.5-300.fc24.x86_64 #1 SMP Thu May 19 13:05:32 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
[root@7eccd2ca69da /]#
exit

exit
[root@dlp ~]#    
# come back
[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 fedora /bin/bash

[root@139add7a4739 /]# [root@dlp ~]#    
# Ctrl+p, Ctrl+q key
[root@dlp ~]#
docker ps
   
# show docker process

CONTAINER ID   IMAGE     COMMAND       CREATED          STATUS         PORTS   NAMES
139add7a4739   fedora    "/bin/bash"   21 seconds ago   Up 19 seconds          sharp_poincare
# connect to container's session

[root@dlp ~]#
docker attach 139add7a4739

[root@139add7a4739 /]#    
# connected
# shutdown container's process from Host's console

[root@dlp ~]#
docker kill 139add7a4739

[root@dlp ~]#
docker ps 

CONTAINER ID   IMAGE     COMMAND       CREATED          STATUS         PORTS   NAMES
 
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