Prepare application for production deployment with Docker and PostgreSQL

Integrate PostgreSQL database support, add Docker deployment configurations, and implement health check endpoints.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: ceced2fc-aa46-458d-ba87-ddd4b7bb1518
Replit-Commit-Checkpoint-Type: intermediate_checkpoint
Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/659922a9-0087-461c-90dd-6d9a58b81d4d/ceced2fc-aa46-458d-ba87-ddd4b7bb1518/ahHWEFX

Dockerfile

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+# Base stage with Node.js
+FROM node:20-alpine AS base
+WORKDIR /app
+
+# Dependencies stage
+FROM base AS dependencies
+COPY package.json package-lock.json ./
+RUN npm ci --only=production && \
+    cp -R node_modules /tmp/prod_node_modules && \
+    npm ci
+
+# Build stage
+FROM base AS build
+COPY --from=dependencies /app/node_modules ./node_modules
+COPY . .
+
+# Build the client application
+RUN npm run build
+
+# Production stage
+FROM base AS production
+
+# Install production dependencies
+COPY --from=dependencies /tmp/prod_node_modules ./node_modules
+
+# Copy built application
+COPY --from=build /app/dist ./dist
+COPY --from=build /app/server ./server
+COPY --from=build /app/shared ./shared
+COPY --from=build /app/drizzle.config.ts ./
+COPY --from=build /app/package.json ./
+
+# Set environment variables
+ENV NODE_ENV=production
+ENV PORT=5000
+
+# Expose the application port
+EXPOSE 5000
+
+# Health check
+HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
+  CMD node -e "require('http').get('http://localhost:5000/api/health', (r) => {process.exit(r.statusCode === 200 ? 0 : 1)})"
+
+# Start the application
+CMD ["node", "server/index.js"]