在symfony 3.4中的FosUser登录中添加Captcha

Question

I have a functionally Login with FosUser.

Now, I am trying to add any captcha to the login generated by FosUser, I am working with Symfony 3.4.4

I've researched some links like:

1. ReCaptcha with this tutorial, but I don't know how to overwrite the check login to add the validation.

2. EWZRecaptchaBundle I did not found any sample with FOsUser

3. BotDetect or CaptchaBundle seems to require a lot of memory to generate the captcha. Then is not my option because my prod environment is a shared hosting

Any help or suggestion are welcome

Greetings