feat: Implement local backend development setup with Docker Compose, introduce .dockerignore, and remove dev dependency pruning from the Dockerfile.

Backend/compose.yaml

@@ -63,6 +63,44 @@ services:
     networks:
       - elearning-network
 
+  # Backend API (Local Build)
+  backend:
+    build:
+      context: .
+      dockerfile: Dockerfile
+    container_name: elearning-backend-local
+    restart: unless-stopped
+    ports:
+      - "4000:4000"
+    env_file:
+      - .env
+    environment:
+      - NODE_ENV=development
+      - DATABASE_URL=postgresql://postgres:12345678@postgres:5432/elearning_dev
+      - S3_ENDPOINT=http://minio:9000
+      - S3_ACCESS_KEY=admin
+      - S3_SECRET_KEY=12345678
+      - SMTP_HOST=mailhog
+      - SMTP_PORT=1025
+    volumes:
+      - ./src:/app/src
+      - ./prisma:/app/prisma
+    networks:
+      - elearning-network
+    depends_on:
+      postgres:
+        condition: service_healthy
+      minio:
+        condition: service_healthy
+      mailhog:
+        condition: service_started
+    healthcheck:
+      test: [ "CMD", "wget", "--no-verbose", "--tries=1", "--spider", "http://localhost:4000/health" ]
+      interval: 30s
+      timeout: 10s
+      retries: 3
+      start_period: 40s
+
   # Adminer - Database Management UI
   adminer:
     image: adminer:latest