feat: Goa GEL Blockchain e-Licensing Platform - Full Stack Implementation

Complete implementation of the Goa Government e-Licensing platform with:

Backend:
- NestJS API with JWT authentication
- PostgreSQL database with Knex ORM
- Redis caching and session management
- MinIO document storage
- Hyperledger Besu blockchain integration
- Multi-department workflow system
- Comprehensive API tests (266/282 passing)

Frontend:
- Angular 21 with standalone components
- Angular Material + TailwindCSS UI
- Visual workflow builder
- Document upload with progress tracking
- Blockchain explorer integration
- Role-based dashboards (Admin, Department, Citizen)
- E2E tests with Playwright (37 tests)

Infrastructure:
- Docker Compose orchestration
- Blockscout blockchain explorer
- Development and production configurations

backend/Dockerfile

@@ -0,0 +1,74 @@
+# ================================
+# Build Stage
+# ================================
+FROM node:20-alpine AS builder
+
+WORKDIR /app
+
+# Install dependencies for native modules
+RUN apk add --no-cache python3 make g++
+
+# Copy package files
+COPY package*.json ./
+
+# Install ALL dependencies (including devDependencies for build)
+RUN npm ci && npm cache clean --force
+
+# Copy source code
+COPY . .
+
+# Build the application
+RUN npm run build
+
+# Remove devDependencies after build
+RUN npm prune --production
+
+# ================================
+# Production Stage
+# ================================
+FROM node:20-alpine AS production
+
+WORKDIR /app
+
+# Add labels
+LABEL maintainer="Government of Goa"
+LABEL description="Goa GEL Backend - Blockchain Document Verification Platform"
+LABEL version="1.0.0"
+
+# Install runtime dependencies
+RUN apk add --no-cache \
+    postgresql-client \
+    bash \
+    wget
+
+# Create non-root user for security
+RUN addgroup -g 1001 -S nodejs && \
+    adduser -S nestjs -u 1001
+
+# Copy built application from builder
+COPY --from=builder --chown=nestjs:nodejs /app/dist ./dist
+COPY --from=builder --chown=nestjs:nodejs /app/node_modules ./node_modules
+COPY --from=builder --chown=nestjs:nodejs /app/package*.json ./
+
+# Copy compiled database migrations and seeds from dist
+COPY --from=builder --chown=nestjs:nodejs /app/dist/database/migrations ./src/database/migrations
+COPY --from=builder --chown=nestjs:nodejs /app/dist/database/seeds ./src/database/seeds
+COPY --from=builder --chown=nestjs:nodejs /app/dist/database/knexfile.js ./src/database/knexfile.js
+
+# Copy initialization scripts
+COPY --chown=nestjs:nodejs scripts ./scripts
+RUN chmod +x scripts/*.sh
+
+# Set environment variables
+ENV NODE_ENV=production
+ENV PORT=3001
+
+# Expose port
+EXPOSE 3001
+
+# Health check
+HEALTHCHECK --interval=30s --timeout=10s --start-period=40s --retries=3 \
+  CMD wget --no-verbose --tries=1 --spider http://localhost:3001/api/v1/health || exit 1
+
+# Use entrypoint script for initialization
+ENTRYPOINT ["/app/scripts/docker-entrypoint.sh"]