v2.1.55

Changelog:
- persist Docker container runtime settings in Gateway DB by node and container name
- auto-apply saved Docker runtime settings on container start, restart, update, and recreate
- keep Docker container inspect output aligned with persisted runtime settings so the UI reflects desired values
- allow stopped-container runtime settings to be saved without forcing recreate
- stabilize Docker folder sync to avoid transient folder disappearance during container update and recreate flows