Deploy full-stack applications (FastAPI backend + Next.js frontend) to a local Kubernetes cluster using Docker multi-stage builds, Minikube, and Helm charts. Use when (1) Containerizing a full-stack application with Docker multi-stage builds, (2) Deploying to local Kubernetes with Minikube, (3) Creating Helm charts for frontend/backend services, (4) Setting up Kubernetes ingress, configmaps, and secrets, (5) Building Docker images with health checks and non-root users, (6) Creating deployment/cleanup scripts for local K8s workflows, (7) Configuring external database connectivity from K8s pods