- unfortunately GitHub makes this incredibly hard and this commit
doesn't even provide a full solution, but it should allow us to fetch
the latest commit for PRs and pushes to a branch, but not force pushes
- if a branch is force-pushed, the existing value is incorrect and we
get errors from Lerna
- this switches to finding the common commit between this branch and
the head as reported by GitHub
- this previously wouldn't trigger if any of the `needs` are skipped
- this switches to waiting for the actual job which checks if all
required jobs were completed successfully
refs https://github.com/TryGhost/DevOps/issues/40
- this is an experimental branch that needs a separate canary build
- these changes should help support that by allowing canary builds on
that branch
refs https://github.com/TryGhost/DevOps/issues/39
- up until now, we've had a CI job which does a really basic test for
migrations, but it barely functions and misses bugs all the time
- this commit removes that and switches to an actual test suite for our
migrations, so we can ensure they function as expected
- also removes the env var hack I came up with for those migrations
tests
- this should lead to safer migrations and faster tests
refs https://github.com/TryGhost/Toolbox/issues/609
- this rewrites the CI workflow to include a pre-test step which will
download and cache dependencies, and will only run tests when the
associated code changes
- this provides a huge improvement over the existing setup, and will
save us a lot of time in CI
