The woodpeckerci/plugin-docker-buildx plugin started dockerd correctly
(privileged mode works) but failed DockerHub authentication. Switch back
to plugins/docker which is proven working in realestate-crawler pipeline.
- Use woodpeckerci/plugin-docker-buildx instead of plugins/docker to fix
Docker daemon connection failures (privileged mode not applied)
- Add pip dependency caching between builds via /woodpecker/pip-cache
- Fix slack plugin image (plugins/slack, not woodpeckerci/plugin-slack)
- Use proper buildx cache_from syntax (type=registry,ref=...)