Docker : Install2016/06/30

	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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