Update CMake to v3.25.1
This merge request does two things:
- This will fix QEMU issues ran into with Raspberry Pi builds: https://gitlab.kitware.com/cmake/cmake/-/issues/20568.
Ran into this while trying to validate gitaly!5226 (merged).
- Trigger rebuild on SHA-256 changes in Dockerfile
Previously the builder images would only be rebuilt if the
Dockerfile or related snippet were changed, but this does not
account for changes in the versions in docker/VERSIONS.
To fix this, we generate the SHA-256 of the output Dockerfile and
use that as the image tag.
Relates to #54 (closed)
Edited by Stan Hu