Build #5 got through checkout, loadConfig, and the pre_build hook,
then hit two real bugs at the actual docker build step:
1. `docker build` failed with "mkdir /root/.docker/buildx: read-only
file system" — dind-pod.yaml mounts the Harbor push-auth secret
read-only at /root/.docker, but modern docker defaults to
BuildKit/buildx, which wants to write its own state there. Forces
the classic builder via DOCKER_BUILDKIT=0 instead.
2. The subsequent error-handling itself then threw a
NullPointerException — every stage file (including untouched
legacy ones from the real devops-lib) reads env.FAILURE when
setting currentBuild.result, but nothing in this repo ever defined
it, so it was null. Defined once in homelabPipeline.groovy rather
than touching 40+ individual occurrences across every stage file.
Mukul Sharma
51d3a0a033