rapid7/metasploit-framework ? reverse-engineered prompt

I want to build a security tool similar to the Metasploit Framework. It should be a powerful open-source platform for security professionals to test networks and applications for vulnerabilities. The main interface for interacting with the framework should be a command-line console.

The whole system needs to be highly modular. I want separate directories for different types of modules, plugins, and helper scripts, so it's easy for other developers to contribute new tests and tools.

Please build this using Ruby. Set up the initial project structure, including a Gemfile for dependencies and a main executable script for the console. It should also be possible to run this inside Docker, so please include a Dockerfile and docker-compose.yml to make the development setup easier. Make sure to include a basic directory structure for things like modules, plugins, lib, and tools.