[Feature request] Add mirrors fallbacking
Sometimes a mirror can be inaccessible because of a mirror maintenance etc. It would be cool if a mirror is not accesible, alpine package manager retried the same package, but on other mirror.
If I have repo list like:
The package manager tries to download package from mirror.yandex.ru. If package manager can not reach the server because of network error, it retries downloading, but with a mirror upper (nl.alpinelinux.org).