Support for older glibc version (2.21)

Hi there,
I'm trying to use the vosk-api library on a system with glibc version 2.21 installed. However, the library currently only supports glibc version 2.27 or higher. Is it possible to add support for older versions of glibc, specifically version 2.21? If not, do you have any recommendations for a workaround or alternative solution?
I've tried to compile from source, but I'm encountering issues with the compilation process. I was unable to use the docker image alphacep/dockcross-linux-armv7, as it seems to no longer exist.
Thanks!