There is on-street paid metered parking.

There are also paid secure carparks within a 10-minute walk.

Park Rite City Quay
3-1 City Quay, Dublin Docklands, Dublin.
https://www.parkrite.ie/carparks/city-quay

Grafton Car Park
49 Clarendon St, Dublin, D02 AC89.
http://www.graftoncarpark.ie/