sudo dnf install -y epel-release redhat-rpm-config
# EPEL contains Postgres 9.6 and 10, but not PostGIS. Postgres 9.4+/10/11/12
sudo dnf install -y epel-release redhat-rpm-config
# EPEL contains Postgres 9.6 and 10, but not PostGIS. Postgres 9.4+/10/11/12