Currently the integration test step in CI is taking minutes to build the build container and various other images, despite having downloaded the ones built in the build step.

I spent some time trying to untangle this. Nearly all of the integration tests (Notifications is an exception) don't go anywhere near the image - they are running Go unit tests with a real database/nats instead of a mock one. However the images are declared as dependencies of these tests in the Makefile.

The build container is needed to run some code-generation steps for protos.

Once the protos have been generated, they are now newer than the downloaded images, so the images get rebuilt.

I can see three ways to go:

• re-do all integration tests to use the images
• admit that we are rebuilding images and stop downloading them during CI
• fix the dependencies and special-case the notifications test so it doesn't rebuild