These hostname mappings were, if I remember correctly, created to mirror the behaviour of docker with the docker-compose file (where each named container entry would be available as a resolvable hostname at runtime).
The only hostname resolution that I believe we need at runtime is for the frontend host to be able to resolve the location of the backend host so that the nginx config can configure fastcgi passthrough.
These hostname mappings were, if I remember correctly, created to mirror the behaviour of
dockerwith thedocker-composefile (where each named container entry would be available as a resolvable hostname at runtime).The only hostname resolution that I believe we need at runtime is for the
frontendhost to be able to resolve the location of thebackendhost so that thenginxconfig can configurefastcgipassthrough.