Fix failing apt-key step in Dockerfile
Fix failing apt-key step in Dockerfile

The docs at https://wiki.postgresql.org/wiki/Apt are different than what we were doing. I tried this approach and it seems to be working now.

snahelou/awx,snahelou/awx,snahelou/awx,wwitzel3/awx,snahelou/awx,wwitzel3/awx,wwitzel3/awx,wwitzel3/awx