The build links are not public, but it redirected to the public page of that image.
If the readme triggered the build, it is possible that you used a base image which has changed, but it works locally if you had an older version with the same tag. Since the failing line is the one beginning with “apt-get update”, it is also possible that it fails because the repository urls has changed either in the version on your local machine or in the version you use on Docker Hub. I could not test it, it is just possible. Or you could have a typo in your command which I can’t see and you wrote only the README file changed.
Some relevant links:
- [SOLVED] - command 'apt-get update' failed: exit code 100 | Proxmox Support Forum
- Docker build returns exit code 100
You should check if your local image and the on on Docker Hub is different. Try with and without buildkit
DOCKER_BUILDKIT=0 docker build ...
DOCKER_BUILDKIT=1 docker build ...
Check the same line with the same base image without multi stage build if you haven’t done it yet, but I don’t think that it matters.
If you can’t find any difference and we can’t figure our the issue, than it can be a Docker Hub issue as well, for example some firewall breaking the request towards the APT repositories if that would give us the same error code. I am not sure.