* Adding one more example - keycloak - alongside with dex IDP.
* don't expose keycloak and proxy ports to the host
* specify email-domain list option in documentation
* get rid of nginx and socat to simplify the example as per https://github.com/oauth2-proxy/oauth2-proxy/pull/604#issuecomment-640054390
* get rid of the scripts - use static file for keycloak startup
* changelog entry
* Update CHANGELOG.md
Co-authored-by: Joel Speed <Joel.speed@hotmail.co.uk>