Build Image for RHEL 8/glibc 2.28 support

[ccolvin-ebay]

We're running into glibc linking errors for Alloy on RHEL 8, after updating from 1.3.1 to 1.9.2. Here are the details of the issue I've been able to dig up:

• The glibc version that RHEL 8 supports is 2.28. (reference)
• Applications compiled linking glibc 2.28 should be compatible with later glibc versions.
• Recent versions of Alloy on Linux require CGo to be enabled, as it is required by godror, so building without CGo enabled results in build failures for godror. (reference)
• The alloy-build-image available on DockerHub is built upon on Debian Bullseye, which ships with glibc 2.31. (cat /etc/-os-release from within running container)

While updating glibc is technically an option generally, it is not an option in our case.

Is there a recommended way to build the latest version(s) of Alloy so that they are compatible with glibc 2.28?