Clarify airnode-client provider URL when running locally

[dcroote]

Closes #1119.

[github-actions]

Visit the preview URL for this PR (updated for commit 512b203):

https://api3-docs--pr1120-dcroote-issue1119-zw4r945o.web.app

_{(expires Wed, 30 Nov 2022 07:42:35 GMT)}

_{🔥 via Firebase Hosting GitHub Action 🌎}

_{Sign: d319eb7cbe610768342d5dc1b5cd1f3aed912886}

[peptide-origami]

Hey @dcroote, hope it's ok if I jump in here with a suggestion.

My OS is PopOs linux and I wasn't able to get the host-docker networks connected unless I used http://host.docker.internal:8545 in my airnode config in addition to --network='host' on the docker launch. As of 62a52aa, the document text reads: For windows, wsl or mac connect to http://host.docker.internal:8545 instead of 127.0.0.1. But I think it might need to be changed to specify this instruction should be used for all platforms.

What do you think? Or are other linux users able to specify 127.0.0.1 in their config & get a successful launch?

[dcroote]

Hi @peptide-origami, thanks for the feedback. We actually use http://127.0.0.1:8545/ in our GitHub Actions CI end to end testing which runs Linux. Still, I'll change the wording to mention that even some Linux variants might need to use http://host.docker.internal:8545 as you describe.

[dcroote]

@wkande no rush, but this is ready to merge now

[wkande]

Thanks