Many fixes and improvements. Replace hardcoded "giordano" by fork name.
This MR includes many fixes and improvements
- It replaces "giordano" by the fork name in several scripts (and in the file with the command to do a local build).
- It improves the scripts to clear images and containers.
- It improves error handling in several places, ensuring early failure/exit in case of errors.
Edited by Domenico Giordano