I need a fresh Ubuntu server configured so my AI-coded SaaS can be tested and updated without friction. Here’s what I’m looking for: • Web server setup – you noted “Stack,” so feel free to choose and configure the stack that best fits Ubuntu while keeping it lightweight and stable. • Database setup – install and secure a production-ready database engine (PostgreSQL or MySQL are both fine; recommend what pairs best with the chosen stack). • CI/CD pipeline – integrate Git so every new branch or merge can trigger an automated pull, build, and deploy to the test environment. A concise, copy-paste-ready script or minimal tool (e.g., Git hooks, GitLab CI, or GitHub Actions) is all that’s required; no large enterprise suites. • Clear README – step-by-step commands to pull the repo, switch branches, and roll back if needed so any team member can repeat the process. Keep it simple and lightweight: no over-engineering, no unnecessary services—just a secure, update-friendly test bed that mirrors production enough for reliable QA.