feat: add tags to docker image with release-please

[ninabernick]

Use release-please to assign versions, create changelog, and tag the docker image with the appropriate version. Enables downstream versioning of platformics in apps: users can add tags to the base platformics docker image used in test_app/Dockerfile
When a PR is merged to main, the release please workflow will determine the current version and add to/open release PR.
When the release PR is merged and a release is created, the we push a docker image with the release tag and the latest tag.

The version in pyproject.toml is a placeholder, the version is dynamically managed by poetry-dynamic-versioning using the release tags.

Notes:

• enforces conventional commit messages: fix = patch, feat = minor, fix!, feat!, refactor! etc = breaking change (needs !)

Testing:

• tested by running release please workflow on my branch, which generated release PR. Won't be able to test release build + push until release PR is merged

[jgadling]

How does poetry-dynamic-versioning figure out what version to use? Does it look at a git tag or something?

[jgadling]

I have some questions about how versions are determined, but since this looks like progress, let's give it a shot.

[jgadling]

Errr actually I take that back -- it looks like we need to explicitly install the plugin package in order for it to work properly, according to its readme: https://github.com/mtkennerly/poetry-dynamic-versioning

[ninabernick]

Errr actually I take that back -- it looks like we need to explicitly install the plugin package in order for it to work properly, according to its readme: https://github.com/mtkennerly/poetry-dynamic-versioning

Ah! Good point! I added it to the github workflow for build and push. Do we also need to add it to makefile commands?

[jgadling]

Let's see how this goes!