feat: Github actions workflow for publishing images

[jonandernovella]

Related issue(s) and PR(s)

This PR closes #11

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Other

List of changes made

• Added missing required env vars
• Added workflow for publishing images
• Bump submodules

Testing

• We should eventually be able to merge this PR and see if it works
• Check https://github.com/NBISweden/mimir/actions/runs/6223362810/job/16889149598 and mimir-test.nbis.se

Definition of Done checklist

• I have made an effort making the commit history understandable
• I have performed a self-review of my own code and commented any hard-to-understand areas
• Tests and lint/format validations are passing
• My changes generate no new warnings
• Make sure layout and text follows design sketches, if there are any