App engine is not serving images of public folder in react

I hosted a react app in app engine , and i have a lot of pictures in the public folder how are displayed correctly in my local machine , but when i deploy it in standard environnement , all the files are deployed , i checked the sources in url images and he serve them but they seems corrupted (when i download them) maybe i did something wrong in the configuration ? the only thing that i can acess is the favicon . this is what i get in source .
App engine is not serving images of public folder in react

GCP Cloud build ignores timeout settings

I use Cloud Build for copying the configuration file from storage and deploying the app to App Engine flex.
The problem is that the build fails every time when it lasts more than 10 minutes. I’ve specified timeout in my cloudbuild.yaml but it looks like it’s ignored. Also, I configured app/cloud_build_timeout and set it to 1000. Could somebody explain to me what is wrong here?