docker-containers-noroutetohostexception-host-is-unreachable
# Allows container to container communication, the solution to the problem
firewall-cmd --zone=public --add-masquerade --permanent
# standard http & https stuff
firewall-cmd --zone=public --add-port=80/tcp --permanent
firewall-cmd --zone=public --add-port=443/tcp --permanent
# + any other port you may need
# reload the firewall
firewall-cmd --reload