Dockerfile broken

[samuelgrant]

PR #175 will break our Dockerfile that builds the backend code. This will happen because the new PR (175) removes sqlite; however, the Dockerfile relies on this engine.

It could be worth spending some time redesigning the Dockerfile to build production-ready images, this could be tied into GHCR and GH Actions so we can automate builds when code is pushed to main. However, I do not have the time to do this at the moment.