Could not use it about ddev-backstopjs

[XristosD]

OK there was an additional configuration step required:
just set "external_links:" option on "docker-compose.backstop.yaml" so that services can communicate each other.
I think that this step could be added on docs so that it helps non-experienced ddev users like my self.

[mmunz]

Hi,

it should add all web container hostnames in the entrypoint: https://github.com/mmunz/ddev-backstopjs/blob/main/backstopBuild/entrypoint.sh

Is the unreachable domain in the same ddev project as ddev-backstop? If so, then i 'm wondering wht it does not work/what i wrong in the entryscript.