icirellik / johann

A docker compose manger, name after the fisherman and composer Johann Fischer

johann

A self-sufficient tool for keeping the images in a docker-compose file in sync with remote registries.

When working with large docker-compose files one of the biggest challenges is ensuring that you remove old images are new ones are pulled. johann arose from constantly running out of hard drive space when working with high churn, low shared image application staks.

johann help by tracking image size, layer reuse, and automatically removing old images when a new one is pulled.

After the first time you run johann it is a good idea to run remove any untagged images that may be left behind from prior docker-compose pulls.

docker rmi $(docker images -q --filter "dangling=true")

That Name

Named after the fisherman and composer Johann Fischer.

johann's Issues

Default Execution

Look for and load any docker-compose.yml by default.

Warn When Image is Running

Warn the user when an image is currently is use by a running docker container.

Handle Docker Command Errors

Add better support for docker command errors and possible retry attempts when timeouts occur.

Add a Command to List and Remove Dangling Images

List all images and manually remove dangling ones.

Write Statistics to Local History File

Write the statistics to a local file. Plot the churn.

Dangling Image Support

Look into adding detection of dangling docker images that may have been caused by a running container. Also, prompt to run the dangling docker command.

Add Configuration

Add a Configuration File to specify which *yml files to read and allow setting the color limits.

Image Level Statistics

Add more statistics to the image level. At a minimum at the reused image %.