Webpack Dev Server with Devilbox

#### ISSUE TYPE

- Documentation

#### SUMMARY
As webpack-dev-server gets more popular and is also a big part of Symfony's webpack encore, I would kindly ask for a proper documentation of a correct setup.

Currently I need to add the following:

`docker-compose.override.yml`
```
version: '2.3'

################################################################################
# SERVICES
################################################################################
services:

# .....

# ------------------------------------------------------------
# PHP
# ------------------------------------------------------------
php:
ports:
- "8080:8080"
```

`webpack.config.js`
```
.configureDevServerOptions(options => {
options.client = {
host: '0.0.0.0'
};
options.firewall = false;
options.https = true;
})
```

and also the starting command needs to be: `encore dev-server --https --host 0.0.0.0`

`package.json`
```
...
"scripts": {
"dev-server": "encore dev-server --host 0.0.0.0 --https",
"dev": "encore dev",
"watch": "encore dev --watch",
"build": "encore production --progress"
}
...

```

Problems with this setup:

- SSL connection is always invalid. Adding the devilbox certificates to the `https: { ... }` options object does not work
- `host` needs to be included in the yarn command to start the server, else it tries to use localhost
- also `client.host` needs to be specified somewhat redundantly to make the web socket working

Webpack Encore 1.0.4
Webpack 5.20.1
Webpack-dev-server: 4.0.0-beta.0
Devilbox 1.7.1

Also see: https://github.com/symfony/webpack-encore/issues/828

#### Goal
Add a documentation guide for proper implementation of webpack-dev-server.

- working SSL connection
- probably with an per project `webpack-dev-server` (wds)? (starting `wds` in multiple projects simultaneously leads to problems

Would highly appreciate! Thank you for the great devilbox!