Revert "Bump frolvlad/alpine-glibc from alpine-3.12 to alpine-3.14 in /docker (#410)"
Revert "Bump frolvlad/alpine-glibc from alpine-3.12 to alpine-3.14 in /docker (#410)"

This reverts commit 50d60680e0a80fc77ceb15bb87b0a6ec57726ef1.

dtandersen/docker_factorio_server