Docker : Add Container images2023/04/27

	Add Container images you created.
[1]	For exmaple, update official image with installing Nginx and add it as a new image for container. The container is generated every time for executing docker run command, so add the latest executed container like follows.

# show images

root@dlp:~#

docker images

REPOSITORY   TAG       IMAGE ID       CREATED       SIZE
ubuntu       latest    08d22c0ceb15   7 weeks ago   77.8MB

# start a Container and install nginx

root@dlp:~#

docker run ubuntu /bin/bash -c "apt-get update; apt-get -y install nginx"

root@dlp:~#

docker ps -a | head -2

CONTAINER ID   IMAGE     COMMAND                  CREATED              STATUS                          PORTS     NAMES
c1ca80717d10   ubuntu    "/bin/bash -c 'apt-g…"   About a minute ago   Exited (0) About a minute ago             strange_carson

# add the image

root@dlp:~#

docker commit c1ca80717d10 srv.world/ubuntu-nginx

sha256:df0287c5017d207dc68035d2bde5500ac6aec1d27231dc98b2c06ea5d4fdb35c

root@dlp:~#

docker images

REPOSITORY               TAG       IMAGE ID       CREATED          SIZE
srv.world/ubuntu-nginx   latest    df0287c5017d   10 seconds ago   177MB
ubuntu                   latest    08d22c0ceb15   7 weeks ago      77.8MB

# generate a container from the new image and execute [which] to make sure nginx exists

root@dlp:~#

docker run srv.world/ubuntu-nginx /usr/bin/which nginx

/usr/sbin/nginx

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