Caddy + docker + caddy-docker-proxy results in FetchError (unable to get local issuer certificate)

[github0013]

So I am using caddy + docker + caddy-docker-proxy, and I am controlling from a remote laptop.

me (laptop) => network => ubuntu (runs docker [one of the containers runs nextjs])

If you are installing nextjs + caddy and what not at your local machine, things should be working smoothly. But such configuration above, accessing caddy's https from the nextjs container will face some issues.

Major one is fetch refusing to connect the caddy https server, like this.

https://next-auth.js.org/errors#client_fetch_error providers FetchError: request to https://YOUR_LOCAL_DOMAIN/api/auth/providers failed, reason: unable to get local issuer certificate

I think this is the part where the fetch calls, and I don't see an option to specify anything about certificate.

next-auth/src/client/index.js

Line 321 in 84094b0

const res = await fetch(`${baseUrl}/${path}`, options)

To solve it, I did this.

$ export NODE_TLS_REJECT_UNAUTHORIZED=0
$ yarn dev 

Just letting you guys know how I could solve this issue. Hope this helps someone in the future.