For the `git` service, ./data is always used to provide an
optional overriding of ssh host keys. In aur-dev production
containers, most services which use the data mount use an
internal Docker `data` volume instead.
Signed-off-by: Kevin Morris <kevr@0cost.org>
Additionally, for now, no-op usage of the MARIADB_SOCKET_DIR
environment variable. This is particularly useful for a serious
production setup, but we don't currently use that.
Signed-off-by: Kevin Morris <kevr@0cost.org>