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Update readme to add more clarifications. resolves #53 (#60)

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@ -209,43 +209,49 @@ moment there is nothing setup to do so. If this is something you need feel free
## Environment variables
To set the environment vars in Linux run `export LOG_LEVEL=debug` and then start FlareSolverr in the same shell.
Name | Default | Notes
|--|--|--|
LOG_LEVEL | info | Used to change the verbosity of the logging.
LOG_LEVEL | info | Used to change the verbosity of the logging. Use `LOG_LEVEL=debug` for more information.
LOG_HTML | false | Used for debugging. If `true` all HTML that passes through the proxy will be logged to the console in `debug` level.
PORT | 8191 | Change this if you already have a process running on port `8191`.
HOST | 0.0.0.0 | This shouldn't need to be messed with but if you insist, it's here!
CAPTCHA_SOLVER | None | This is used to select which captcha solving method it used when a captcha is encountered.
HEADLESS | true | This is used to debug the browser by not running it in headless mode.
Environment variables are set differently depending on the operating system. Some examples:
* Docker: Take a look at the Docker section in this document. Environment variables can be set in the `docker-compose.yml` file or in the Docker CLI command.
* Linux: Run `export LOG_LEVEL=debug` and then start FlareSolverr in the same shell.
## Captcha Solvers
Sometimes CF not only gives mathematical computations and browser tests, sometimes they also require the user to solve
a captcha. If this is the case, FlareSolverr will return the captcha page. But that's not very helpful to you is it?
Sometimes CloudFlare not only gives mathematical computations and browser tests, sometimes they also require the user to
solve a captcha.
If this is the case, FlareSolverr will return the error `Captcha detected but no automatic solver is configured.`
FlareSolverr can be customized to solve the captchas automatically by setting the environment variable `CAPTCHA_SOLVER`
to the file name of one of the adapters inside the [/captcha](src/captcha) directory.
### hcaptcha-solver
This method makes use of the [hcaptcha-solver](https://github.com/JimmyLaurent/hcaptcha-solver) project which attempts
to solve hCaptcha by randomly selecting images.
This method makes use of the [hcaptcha-solver](https://github.com/JimmyLaurent/hcaptcha-solver) project.
To use this solver you must first install it and then set it as the `CAPTCHA_SOLVER`.
NOTE: This solver works picking random images so it will fail in a lot of requests and it's hard to know if it is
working or not. In a real use case with Sonarr/Radarr + Jackett it is still useful because those apps make a new request
each 15 minutes. Eventually one of the requests is going to work and Jackett saves the cookie forever (until it stops
working).
To use this solver you must set the environment variable:
```bash
npm i hcaptcha-solver
CAPTCHA_SOLVER=hcaptcha-solver
```
### CaptchaHarvester
This method makes use of the [CaptchaHarvester](https://github.com/NoahCardoza/CaptchaHarvester) project which allows
users to collect thier own tokens from ReCaptcha V2/V3 and hCaptcha for free.
users to collect their own tokens from ReCaptcha V2/V3 and hCaptcha for free.
To use this method you must set these ENV variables:
To use this method you must set these environment variables:
```bash
CAPTCHA_SOLVER=harvester