dockerbuild.sh execution failed

![Image](https://github.com/user-attachments/assets/9471a137-92ed-456d-bd8b-9b3c1b1a34c5)

just change the link of jfrog in dockerfile：

![Image](https://github.com/user-attachments/assets/36a4510a-3d5c-46f1-b09a-33eb40ace5b4)

solution from: https://github.com/boostorg/boost/issues/842#issuecomment-1872945535