Setup Postgres
aws rds create-db-instance \
--db-instance-identifier my-postgres-db \
--db-instance-class db.t3.micro \
--engine postgres \
--master-username <username> \
--master-user-password <password> \
--allocated-storage 20 \
--publicly-accessible \
--backup-retention-period 0 \
--no-multi-az \
--storage-type gp2 \
--engine-version 15.13 \
--region <region>