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If you build containers, you should be looking into Docker Slim (lemmy.fancywhale.ca)

submitted 1 year ago by FancyGUI@lemmy.fancywhale.ca to c/selfhosted@lemmy.world

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As the title says. I build containers for my platforms/clients/myself-selfhosted@home and you would not believe how much smaller you can get your images. Here's an example when slimming one of my images:

cmd=build info=results status='MINIFIED' by='18.97X' size.original='1.0 GB' size.optimized='55 MB'

That's a Python app that I didn't have to do multi-staged build with docker because of the Slim command. And it's a working version of that app that I'm using today.

Same for one of my flutter apps that I thought it was as small as it could be:

cmd=build info=results status='MINIFIED' by='1.98X' size.original='66 MB' size.optimized='33 MB'

TLDR: slim your container images!! https://github.com/slimtoolkit/slim

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[–] kinttach@lemm.ee 22 points 1 year ago (1 children)

For a complex (i.e., larger) image, I would be concerned that I didn’t exercise all of my app’s functionality and something important might be stripped out of the image.

I use Alpine instead of Ubuntu when I’m concerned about image size.

[–] FancyGUI@lemmy.fancywhale.ca 4 points 1 year ago

Fair point! What I've done in my app to test out and ensure it works is a proper health endpoint that tests the use-cases of the app. So far it has been very good on keeping everything that I need on slimming.