Update Docker Compose configuration to support customizable Nginx ports

- Modify `docker-compose.yaml` to use environment variables for HTTP and HTTPS port mappings, allowing flexibility in port configuration.
- Enhance `README.md` with instructions for using non-standard HTTPS ports, including examples for remote development setups.

docker-compose.yaml

@@ -142,8 +142,8 @@ services:
     image: nginx:alpine
     profiles: ["tls"]
     ports:
-      - "80:80"
-      - "443:443"
+      - "${NGINX_HTTP_PORT:-80}:80"
+      - "${NGINX_HTTPS_PORT:-443}:443"
     volumes:
       # 整份配置当作 nginx.conf 加载(容器内 proxy_pass 用服务名 api/ui)
       - ./deploy/nginx/ai-video.docker.conf:/etc/nginx/nginx.conf:ro
@@ -161,8 +161,8 @@ services:
     image: nginx:alpine
     profiles: ["remote-dev"]
     ports:
-      - "80:80"
-      - "443:443"
+      - "${NGINX_HTTP_PORT:-80}:80"
+      - "${NGINX_HTTPS_PORT:-443}:443"
     volumes:
       - ./deploy/nginx/ai-video.remote-dev.conf:/etc/nginx/nginx.conf:ro
       - ./deploy/certs:/etc/nginx/certs:ro