* Update OpenSSH server image version and add no penalties configuration
* Refactor SSH configuration paths and update test scripts for public key handling
* Update Docker Compose volumes to remove read-only flag for shared directory
* Remove end-to-end test files and related Docker configuration for CA public cert authentication
* chore: Update sshpiperd command with additional options for key generation and log level
* chore: Update README.md with ports to other platforms
* chore: Update CONTRIBUTING.md with note about starting develop environment in vscode
