cf058a19f4add support for multiple repositories via env vars `REPO_PATH_[NAME]`, `SSH_CLIENT_PUBLIC_KEYS_[NAME]` & `SSH_CLIENT_PUBLIC_KEYS_APPEND_ONLY_[NAME]`
f7db9928b9alpine base image; openssh server listening on tcp port 2200; populate authorized_keys file with env var SSH_CLIENT_PUBLIC_KEYS; launch borgbackup backend restricted to repo at /repostory when ssh client connects