Revert "Remove exact pinning of apk packages"
Revert "Remove exact pinning of apk packages"

This reverts commit 9ab3dfb902901494a35431111faedb9b35cb95e9.

Pinning exact versions make sense in the context of docker. Even tough
it breaks each time a package gets updated it is still helpful being
able to have images with an exact version

RagedUnicorn/docker-mariadb