There are a couple of changes here which should improve stability of the tests. Hopefully that will be sufficient, but it is difficult to tell for sure if it is complete.
This change wraps the E2E test data into a github repository, which is then included in the test builds as static data.
That makes running the e2e tests as simple as:
yarn test:e2e:server
yarn test:e2e
without any need to have docker etc installed/running.