* Switch base Ubuntu image to 'noble' version

- Correct a typo in README.md
- Update Docker sources to use 'noble'
- Change base image from Ubuntu 22.04 to 'noble'

Adjust UID for coder user in Dockerfiles

Remove `ubuntu` user from Dockerfiles

Adjust UID for coder user in Dockerfiles

Use userdel to remove ubuntu user

Use userdel to remove ubuntu user

* Update ubuntu.Dockerfile