ci: refactor end-to-end testing to be multistep

[cdxker]

Description

Refactor end-to-end testing to be multistep process where the first step is buliding the docker image. Currently we build a docker image before each test runs. Refactor this to instead a single action that builds the docker image with many sub-steps that run the tests in docker-compose.

Acceptance Criteria

• docker image build step should be tagged based on the pr.
• tests should run off the built that is built.