No, AeroUnion has no scheduled flights out of Dublin. However, AeroUnion does fly out of Moscow Vnukovo. There are also other airline options to choose from if you still want to book a flight from Dublin. Pobeda, for example, is an airline that flies out of Dublin on a regular basis.
Mirnyj is the most popular airport that AeroUnion serves, followed by Moscow Vnukovo and Novosibirsk Tolmachevo.