This is to avoid low-impact failures from getting the whole container to
restart.
<!-- This is an auto-generated comment: release notes by coderabbit.ai
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## Summary by CodeRabbit
- **Bug Fixes**
- Modified health check to focus on critical services (`editor`, `rts`,
`backend`) for more efficient monitoring.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
Move the files that are copied into the Docker image, into an `fs`
folder, that reflects the folder structure of that in the image. This
means two things right away:
1. A single `COPY` instruction in `Dockerfile` is enough to copy all the
files to their places.
2. The structure of files in the repo reflects that in the Docker image.
This makes working with the files/folders and troubleshooting with them
much easier.
❗ Note: **There's actually only 3 files changed, rest are just moved.**
