Dcmcand optimize docker files

[dcmcand]

Follow on to #621 that should be merged before this is reviewed

Description

This PR optimizes the Docker files for the conda-store and conda-store-server images.

Currently the conda-store image is 1.54GB. This PR reduces that to 890MB by using multistage builds. This is a reduction of 43%.

The current conda-store-server image is 1.96GB. This PR reduces that to 1.24GB, a reduction of 37%.

ChatGPT

Smaller Docker images offer faster container deployment, reduced storage and bandwidth costs, and enhanced security by minimizing potential attack surfaces.

This pull request:

• Utilizes multistage builds to reduce the size of images
• Uses caches to speed the dev workflow and make rebuilding containers faster
• Removes unneeded files from images.

Pull request checklist

• Did you test this change locally?
• Did you update the documentation (if required)?
• Did you add/update relevant tests for this change (if required)?

Additional information

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[trallard]

Neat I love some image optimisation 🎉 It seems now that we are duplicating some bits in the build_docker_image.yaml and the release.yaml to keep these aligned and reduce duplication. Shall we move these tidbits into a reusable action and call it from the workflows instead?

[dcmcand]

Neat I love some image optimisation 🎉 It seems now that we are duplicating some bits in the build_docker_image.yaml and the release.yaml to keep these aligned and reduce duplication. Shall we move these tidbits into a reusable action and call it from the workflows instead?

I think that makes sense. I will make another issue I made #629 and will do it in a separate PR.

[nkaretnikov]

FYI: integration test failure is unrelated, I'm investigating: #632

[trallard]

This looks good so will go ahead and merge and we can see how these changes look with the release candidate tomorrow 🤞🏽
Thanks @dcmcand