@FediTips Mastodon admins may use a variety of translation back-ends; with self-hosted libretranslate arguably being the most privacy friendly (data never leaves the server).
The Libretranslate docker image (https://hub.docker.com/r/libretranslate/libretranslate) doesn't ship any languages, so on first start it needs to download multiple gigabytes of data.
To work around this I've been publishing self-contained libretranslate container images here: https://github.com/t-lo/LibreTranslate-ghcr-publisher/pkgs/container/libretranslate that include all supported translation languages.