w3c-validator

Inicie com

'docker-compose up'

W3C-Validator -

Acesse http://localhost/w3c-validator/ para o validator antigo W3C-Validator. From https://github.com/w3c/markup-validator

Validator Nu

Acesse http://localhost:8888/ para o Validator-Nu. From https://github.com/validator/validator

CSS Validator

Acesse http://localhost:8080/ para o CSS Validator. From https://github.com/w3c/css-validator