Ubuntu 20.04
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Docker : Add Container images
2020/06/02
 
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              1d622ef86b13        5 weeks ago         73.9MB

# 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
42fd81ee0cee        ubuntu              "/bin/bash -c 'apt u…"   55 seconds ago      Exited (0) 34 seconds ago                         interesting_wozniak

# add the image

root@dlp:~#
docker commit 42fd81ee0cee srv.world/ubuntu_nginx

d30733d4f31594f46deda79629adc9b92852f1f48062a2401549903095f2cdec

root@dlp:~#
docker images
REPOSITORY               TAG                 IMAGE ID            CREATED             SIZE
srv.world/ubuntu_nginx   latest              d30733d4f315        9 seconds ago       155MB
ubuntu                   latest              1d622ef86b13        5 weeks ago         73.9MB

# 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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