Add DevSecOpsApp code with updated Jenkins pipeline for multi-environment deployment

docker-compose.yml

@@ -0,0 +1,45 @@
+version: '3.8'
+
+services:
+  # Backend API
+  backend:
+    build:
+      context: ./backend
+      dockerfile: Dockerfile
+    container_name: todo-backend
+    restart: unless-stopped
+    environment:
+      NODE_ENV: production
+      PORT: 3001
+    ports:
+      - "3001:3001"
+    networks:
+      - todo-network
+    healthcheck:
+      test: ["CMD", "wget", "--no-verbose", "--tries=1", "--spider", "http://localhost:3001/health"]
+      interval: 30s
+      timeout: 10s
+      retries: 3
+
+  # Frontend React App
+  frontend:
+    build:
+      context: ./frontend
+      dockerfile: Dockerfile
+    container_name: todo-frontend
+    restart: unless-stopped
+    ports:
+      - "80:80"
+    depends_on:
+      - backend
+    networks:
+      - todo-network
+    healthcheck:
+      test: ["CMD", "wget", "--no-verbose", "--tries=1", "--spider", "http://localhost:80/health"]
+      interval: 30s
+      timeout: 10s
+      retries: 3
+
+networks:
+  todo-network:
+    driver: bridge