[FIXED] MacOS - Could not resolve host: example.localhost using jwilder/nginx-proxy

Currently I have the problem, that Insomnia can't connect to localhost domains provided by the docker container nginx-proxy.

```
* Preparing request to https://examle.localhost/api/variants/1575?useNumberAsId=true
* Current time is 2022-02-04T07:14:46.541Z
* Using libcurl/7.73.0 OpenSSL/1.1.1k zlib/1.2.11 brotli/1.0.9 zstd/1.4.9 libidn2/2.1.1 libssh2/1.9.0 nghttp2/1.42.0
* Using default HTTP version
* Disable timeout
* Enable automatic URL encoding
* Disable SSL validation
* Enable cookie sending with jar of 6 cookies
* Could not resolve host: example.localhost
* Closing connection 2
```

Calling this URL by browser (Chrom, Firefox or Safari) works properly.

OS: MacOS Monterey 12.2
insomnia:
```
Version: Insomnia 2021.7.2
Release date: 12/9/2021
OS: Darwin x64 21.3.0
Electron: 11.2.3
Node: 12.18.3
V8: 8.7.220.31-electron.0
Architecture: x64
node-libcurl: libcurl/7.73.0 OpenSSL/1.1.1k zlib/1.2.11 brotli/1.0.9 zstd/1.4.9 libidn2/2.1.1 libssh2/1.9.0 nghttp2/1.42.0
```

Using https://github.com/nginx-proxy/nginx-proxy for localhost development.

The issue names no source files, tests, or entry points. Start by reproducing the request in Insomnia on macOS Monterey with a dockerized nginx-proxy hostname, then compare it with the same URL in a browser. Done means Insomnia resolves the local hostname and connects successfully; the issue is marked fixed but provides no fix details.

Written by the indexing model from the issue text.