Update OCR service command in docker-compose.yml to use 'paddlex[ocr]' and streamline pipeline execution

- Changed the installation command to use 'paddlex[ocr]' for focused functionality.
- Updated the command to directly serve the OCR pipeline without checking for a configuration file, simplifying the setup process.

docker-compose.yml

@@ -756,17 +756,13 @@ services:
     restart: unless-stopped
     command: /bin/sh -c "set -e; \
       python -m pip install --upgrade pip; \
-      python -m pip install --no-cache-dir 'paddlex[all]'; \
+      python -m pip install --no-cache-dir 'paddlex[ocr]'; \
       python -m paddlex --install serving; \
-      if [ ! -f /app/PP-ChatOCRv5-doc.yaml ]; then \
-        python -m paddlex --get_pipeline_config PP-ChatOCRv5-doc --save_path /app; \
-      fi; \
-      exec python -m paddlex --serve --pipeline /app/PP-ChatOCRv5-doc.yaml --device cpu --port 8080"
+      exec python -m paddlex --serve --pipeline OCR --device cpu --port 8080"
     volumes:
       - paddleocr_cache:/root/.paddleocr
       - paddle_cache:/root/.cache/paddle
       - paddlex_data:/root/.paddlex
-      - ./paddlex:/app
     healthcheck:
       test: ["CMD-SHELL", "wget -qO- http://localhost:8080 > /dev/null || exit 1"]
       interval: 30s