feat: dockerfile uses ape slim and add build yaml

[johnson2427]

What I did

Added ape slim to the build process and then created a build yaml to deploy our image to ghcr

fixes: #71
fixes: SBK-429

How I did it

Confirmed I can build locally with the ape slim image, then reused a bit of ape's build process

How to verify it

run docker build locally with a locally built ape-slim container

Checklist

• Passes all linting checks (pre-commit and CI jobs)
• New test cases have been added and are passing
• Documentation has been updated
• PR title follows Conventional Commit standard (will be automatically included in the changelog)

[johnson2427]

Do not merge this, testing that the workflow works, then I have to fix ape's image deployment

[linear]

SBK-429 use GHCR instead of Dockerhub

[fubuloubu]

Perfect

This PR is blocked until release of Ape (and verifying ape stable-slim is properly being built)

[fubuloubu]

Stable slim is not getting published...

[johnson2427]

@fubuloubu let me know how far back we want to keep containers. I have the same policy as ape right now for retention, I'm sure we don't want that

[fubuloubu]

@fubuloubu let me know how far back we want to keep containers. I have the same policy as ape right now for retention, I'm sure we don't want that

I think just until 0.5.0, because that's is the minimum that the clusters support