feat: Optimized configuration

Dockerfile

@@ -7,6 +7,11 @@ RUN apt-get update && apt-get install -y \
 WORKDIR /app
 COPY api_concurrent.py requirements.txt ./
 RUN pip install -r requirements.txt
+ENV VOXCPM_MODEL_ID="/models/VoxCPM1.5/" \
+    VOXCPM_CPU_WORKERS="2" \
+    VOXCPM_UVICORN_WORKERS="1" \
+    MAX_GPU_CONCURRENT="1"
+
 EXPOSE 5000
 CMD [ "python", "./api_concurrent.py" ]