Commit [packager: fetch glibc corresponding to the architecture](https://github.com/awslabs/aws-lambda-cpp/commit/5959e2fac63ece49720597979856d3f68ab943a7) causes unintended failure on certain operating systems. This commit introduces the use of the 'arch' command. The 'arch' command is not default installed in GNU coreutils. See here: https://www.gnu.org/software/coreutils/manual/html_node/arch-invocation.html Perhaps we switch to using `uname -m` ?