INIT(deploy): portfolio project setup

Add complete portfolio project including:
- Next.js application in services/nextjs
- Docker configurations for dev and prod
- Kubernetes deployment manifests with kustomize
- ArgoCD application configuration
- GitHub Actions workflow for automated builds

deploy/docker/Dockerfile.dev

@@ -0,0 +1,26 @@
+# Development Dockerfile for Portfolio Next.js application
+FROM node:20-alpine AS base
+
+# Install dependencies for development
+RUN apk add --no-cache libc6-compat curl
+
+WORKDIR /app
+
+# Copy package files
+COPY package.json package-lock.json* ./
+
+# Install all dependencies (including dev dependencies)
+RUN npm ci
+
+# Copy source code
+COPY . .
+
+# Expose port
+EXPOSE 3000
+
+# Health check
+HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
+  CMD curl -f http://localhost:3000 || exit 1
+
+# Default command (can be overridden in docker-compose)
+CMD ["npm", "run", "dev"]