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keyCloak Keycloack is a software that allows you to configure secure login and authentication. Keyclocak provides user federation, strong authentication, user management and fine-grained authorization. Features: Allows Identity brokering and social login. Implements identification with OpenID Connect, SAML 2.0 user federation and implements your own providers Integrations The easiest way to make it works is with a Docker. They provides an image ready to use https://www.keycloak.org/server/containers . Also, you can use the pre-build container with the command:

Write a lexical parser in Haskell Haskell is widely used in academic stages and for teaching the functional programming paradigm. Consequently, there are numerous examples and implementations in Haskell for building parsers. In this tutorial, I will describe the process of writing a simple parser in Haskell, with the dual purpose of learning Haskell and understanding how to write a parser. My intent is not to teach others how to do this kind of project in detail, as there are already many excellent tutorials and examples that I followed.