Many things will do the job...
But wood and al move at different rates.
Apply good finish in multiple coats to ALL SURFACES of the wood, that helps keep the moisture level where it is now so it is less likely to grow and shrink.
Epoxy holds well, but is solid, dissimilar materials are the issue.
Temperature will cause the al to move more than the wood, so the glue needs to have some flexibility.
Some doublesided tapes now are unbelievable in how they hold.
If you have a well stocked mom and pop hardware store with folks who know what they are doing could provide what you need.
Maybe drill.holes in back side of wood before sealing to created attachment points for the glue
Tony & Lori
1989 Country Coach Savannah SE