How to commit changes to a Docker image
By Flavio Copes
Learn how to commit changes to a Docker image with the docker commit command, creating a new tagged version and adding a changelog message with --change.
~~~
What happens when you deploy your app, and then you want to fix a bug, or simply release an update?
Once you have a container running, you can get its ID using docker ps, then you use docker commit to create a new tag for the image from it:
docker commit <id> <username>/<imagename>:<tagname>You can also add a changelog message that lists what changed in the new version:
docker commit --change "description" <id> <username>/<imagename>:<tagname>~~~
Related posts about docker: