Update Dockerfile

Dockerfile

@@ -22,6 +22,7 @@ COPY upload-onnx.py .
 COPY server.py /home/app/
 RUN python3 download-model.py
 RUN python3 -m piper_train.export_onnx model.ckpt ${MODELNAME}.onnx
+RUN rm -f model.ckpt
 RUN python3 upload-onnx.py
 RUN mv ${MODELNAME}.onnx /home/app/${MODELNAME}.onnx
 RUN mv ${MODELNAME}.onnx.json /home/app/${MODELNAME}.onnx.json