Thank you juniordev. I managed to find what I needed with the following query:
SELECT app.NodeID as NodeId, app.ApplicationID as AppID, app.FullyQualifiedName as AppName, c.Name as GroupName
FROM Orion.APM.Application app
LEFT JOIN Orion.ContainerMemberSnapshots cms on cms.MemberUri = app.Uri
LEFT JOIN Orion.Container c on c.ContainerID = cms.ContainerID