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Currently, sscpy's Dockerfile is based on Alpine Linux (largely because it relies on the Alpine variant of our ssc-docker image upstream). As the Alpine-based build of libssc is becoming a bit more difficult to maintain as a target, we should consider changing the base image for sscpy to rely on the Debian-based variant of ssc-docker, which better aligns with other core internal images anyway.

It's been a long while since we last updated the SSC header file that is vendorized in this repository. We should first test out how difficult it might be to "modernize" with the latest stable version of libssc by:

• Updating sscapi.h and related FFI bindings
• Compiling a newer version of libssc and testing against the updated FFI bindings in sscpy

As many of our other internal library projects are moving to poetry-based packaging, we should also follow suit here for consistency. This should allow us to better isolate environments and dependencies when developing, testing, and upgrading this codebase vs. relying solely on virtualenvs/tox. As another nice side effect, this also may serve as a simpler way to finally distribute this package on PyPI (maybe even with a proper bdist).

• Create poetry-friendly pyproject.toml with current dependencies and development tooling (and remove unneeded files like setup.py, requirements.txt)
• Update installation commands in Dockerfile
• Update README to reflect new development install/contribution instructions