feat: Add Docker support for local development and testing

[taj54]

🚀 Feature Request: Add Docker Support for Local Dev & Testing

Hi team 👋,

I noticed that the package doesn’t currently include a Docker setup. It would be really helpful if we could have a minimal Dockerfile and docker-compose.yml so contributors can spin up the environment quickly—without needing to manually configure PHP, dependencies, or databases.

Right now, to run tests or use Pest/Larastan locally, we need to have everything set up already. With Docker support, this process would become much smoother and more consistent across different dev setups.

✅ What I’m proposing:

• Add a simple Dockerfile (PHP 8.2+, Composer installed)
• docker-compose.yml with optional services like MySQL or SQLite
• Mount volumes so changes reflect immediately
• Easy commands for:
  • Running tests (vendor/bin/pest)
  • Static analysis (vendor/bin/phpstan analyse)
• Maybe a small update to README.md to show how to use it

This can be a nice DX improvement, especially for contributors who just want to clone the repo and start testing things out.

Let me know if this is something you'd consider — happy to open a PR with an initial setup if you’re open to it 🚀