dockerization of the app

apps/api/dockerfile

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+# Build stage
+FROM node:18-alpine AS builder
+
+WORKDIR /app
+
+# Copy package files
+COPY package*.json ./
+COPY apps/api/package*.json ./apps/api/
+COPY libs/engine/package*.json ./libs/engine/
+COPY packages/rules/package*.json ./packages/rules/
+
+# Install dependencies
+RUN npm ci
+
+# Copy source code
+COPY . .
+
+# Build the API
+RUN npm run build --workspace=apps/api
+
+# Production stage
+FROM node:18-alpine
+
+RUN apk add --no-cache tini
+
+WORKDIR /app
+
+# Create non-root user
+RUN addgroup -g 1001 -S nodejs && \
+    adduser -S nodejs -u 1001
+
+# Copy package files and installed node_modules
+COPY --from=builder --chown=nodejs:nodejs /app/package*.json ./
+COPY --from=builder --chown=nodejs:nodejs /app/apps/api/package*.json ./apps/api/
+COPY --from=builder --chown=nodejs:nodejs /app/libs/engine/package*.json ./libs/engine/
+COPY --from=builder --chown=nodejs:nodejs /app/packages/rules/package*.json ./packages/rules/
+COPY --from=builder --chown=nodejs:nodejs /app/node_modules ./node_modules
+
+# Copy built application
+COPY --from=builder --chown=nodejs:nodejs /app/dist ./dist
+
+# Set environment
+ENV NODE_ENV=production
+ENV PORT=3000
+
+# Expose port
+EXPOSE 3000
+
+# Switch to non-root user
+USER nodejs
+
+# Use tini as init process
+ENTRYPOINT ["/sbin/tini", "--"]
+
+# Start the API
+CMD ["node", "dist/apps/api/main.js"]

docker-compose.yml

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+version: "3.8"
+
+services:
+  # PostgreSQL Database
+  postgres:
+    image: postgres:15-alpine
+    container_name: gasguard-postgres
+    restart: unless-stopped
+    environment:
+      POSTGRES_USER: ${DB_USER:-gasguard}
+      POSTGRES_PASSWORD: ${DB_PASSWORD:-gasguard123}
+      POSTGRES_DB: ${DB_NAME:-gasguard}
+      POSTGRES_HOST_AUTH_METHOD: scram-sha-256
+    volumes:
+      - postgres-data:/var/lib/postgresql/data
+      - ./docker/postgres/init:/docker-entrypoint-initdb.d
+    ports:
+      - "5432:5432"
+    networks:
+      - gasguard-network
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U ${DB_USER:-gasguard}"]
+      interval: 10s
+      timeout: 5s
+      retries: 5
+    logging:
+      driver: "json-file"
+      options:
+        max-size: "10m"
+        max-file: "3"
+
+  # Redis for BullMQ
+  redis:
+    image: redis:7-alpine
+    container_name: gasguard-redis
+    restart: unless-stopped
+    command: redis-server --appendonly yes --requirepass ${REDIS_PASSWORD:-redis123}
+    volumes:
+      - redis-data:/data
+    ports:
+      - "6379:6379"
+    networks:
+      - gasguard-network
+    healthcheck:
+      test: ["CMD", "redis-cli", "--raw", "incr", "ping"]
+      interval: 10s
+      timeout: 5s
+      retries: 5
+    logging:
+      driver: "json-file"
+      options:
+        max-size: "10m"
+        max-file: "3"
+
+  # Backend API
+  api:
+    build:
+      context: .
+      dockerfile: apps/api/Dockerfile
+    container_name: gasguard-api
+    restart: unless-stopped
+    depends_on:
+      postgres:
+        condition: service_healthy
+      redis:
+        condition: service_healthy
+    environment:
+      NODE_ENV: ${NODE_ENV:-production}
+      PORT: 3000
+      DATABASE_URL: postgresql://${DB_USER:-gasguard}:${DB_PASSWORD:-gasguard123}@postgres:5432/${DB_NAME:-gasguard}
+      REDIS_HOST: redis
+      REDIS_PORT: 6379
+      REDIS_PASSWORD: ${REDIS_PASSWORD:-redis123}
+      RATE_LIMIT_TTL: ${RATE_LIMIT_TTL:-60}
+      RATE_LIMIT_MAX: ${RATE_LIMIT_MAX:-10}
+      API_VERSION: v1
+      JWT_SECRET: ${JWT_SECRET:-your-secret-key-change-in-production}
+    ports:
+      - "3000:3000"
+    networks:
+      - gasguard-network
+    volumes:
+      - ./logs:/app/logs
+    healthcheck:
+      test:
+        [
+          "CMD",
+          "wget",
+          "--no-verbose",
+          "--tries=1",
+          "--spider",
+          "http://localhost:3000/health",
+        ]
+      interval: 30s
+      timeout: 10s
+      retries: 3
+      start_period: 20s
+    logging:
+      driver: "json-file"
+      options:
+        max-size: "10m"
+        max-file: "3"
+
+  # Worker Service (BullMQ)
+  worker:
+    build:
+      context: .
+      dockerfile: apps/worker/Dockerfile
+    container_name: gasguard-worker
+    restart: unless-stopped
+    depends_on:
+      postgres:
+        condition: service_healthy
+      redis:
+        condition: service_healthy
+    environment:
+      NODE_ENV: ${NODE_ENV:-production}
+      DATABASE_URL: postgresql://${DB_USER:-gasguard}:${DB_PASSWORD:-gasguard123}@postgres:5432/${DB_NAME:-gasguard}
+      REDIS_HOST: redis
+      REDIS_PORT: 6379
+      REDIS_PASSWORD: ${REDIS_PASSWORD:-redis123}
+      WORKER_CONCURRENCY: ${WORKER_CONCURRENCY:-5}
+    networks:
+      - gasguard-network
+    volumes:
+      - ./logs:/app/logs
+    deploy:
+      replicas: ${WORKER_REPLICAS:-2}
+    logging:
+      driver: "json-file"
+      options:
+        max-size: "10m"
+        max-file: "3"
+
+  # Dashboard (Optional)
+  dashboard:
+    build:
+      context: .
+      dockerfile: apps/dashboard/Dockerfile
+    container_name: gasguard-dashboard
+    restart: unless-stopped
+    depends_on:
+      - api
+    environment:
+      API_URL: http://api:3000
+    ports:
+      - "8080:80"
+    networks:
+      - gasguard-network
+    logging:
+      driver: "json-file"
+      options:
+        max-size: "10m"
+        max-file: "3"
+
+networks:
+  gasguard-network:
+    driver: bridge
+    name: gasguard-network
+
+volumes:
+  postgres-data:
+    name: gasguard-postgres-data
+  redis-data:
+    name: gasguard-redis-data