I wrote a docker file to create an Image with NixOS to run dapptools, the dockerfile as below: <img width="304" alt="Screenshot 2022-07-25 at 23 46 55" src="https://user-images.githubusercontent.com/6882971/180820789-e8101ed7-eb24-4b9d-ae7b-bd7bbf384b11.png"> But docker build results turned to be an error: <img width="855" alt="Screenshot 2022-07-25 at 23 52 12" src="https://user-images.githubusercontent.com/6882971/180821398-3cbc68b1-0b7b-4230-8e71-f05b59891902.png"> How to prevent this error?