Hard-code name of nginx file
Hard-code name of nginx file

* source_input.type is not present in the new dep-builder pipeline and there is no reason to parameterize this

[#171771967]

cloudfoundry/buildpacks-ci,cloudfoundry/buildpacks-ci,cloudfoundry/buildpacks-ci,cloudfoundry/buildpacks-ci,cloudfoundry/buildpacks-ci