Update Dockerfile

Dockerfile

@@ -33,5 +33,5 @@ RUN git clone https://github.com/VOICEVOX/voicevox_engine.git
 RUN pip install --no-cache-dir --upgrade -r voicevox_engine/requirements.txt
 
 # Start the FastAPI app on port 7860, the default port expected by Spaces
-CMD ["python", "voicevox_engine/run.py", "--voicelib_dir", "voicevox_core", "--host", "0.0.0.0", "--port", "7860", "--cors_policy_mode", "all"]
+CMD ["python", "voicevox_engine/run.py", "--voicelib_dir", "voicevox_core", "--host", "0.0.0.0", "--port", "7860", "--cors_policy_mode", "all", "--load_all_models"]
 #RUN voicevox_engine --download-models