full diff: https://github.com/moby/buildkit/compare/v0.8.2...v0.8.3
- vendor containerd (required for rootless overlayfs on kernel 5.11)
- not included to avoid depending on a fork
- Add retry on image push 5xx errors
- contenthash: include basename in content checksum for wildcards
- Fix missing mounts in execOp cache map
- Add regression test for run cache not considering mounts
- Add hack to preserve Dockerfile RUN cache compatibility after mount cache bugfix
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>