Docker
Can two jobs share one builder?
Quick answer
Yes. Matrix legs and separate workflows can attach to the same builder and share its cache.
The detail that matters
Concurrent builds on one builder contend for CPU, so scale the builder or use one per architecture.
Your next build could be twice as fast, at half the price
Start free. Migrating away is the same one line, and we publish that diff too.
Related
How do I reduce image pull time?Use a registry pull-through cache in the same network as the runner.How do I reset a Docker builder cache?Run docker buildx prune on the builder, or recreate the builder instance.Do remote builders support multi-platform builds?Yes. runnerhut runs separate amd64 and arm64 builders and merges the results.How do I push a manifest list?Build each architecture by digest, then combine them with docker buildx imagetools create.