allow-idp-initiated If set, allows for IdP initiated authentication flow (env SAML_PROXY_ALLOW_IDP_INITIATED) -attribute-header-mappings attribute=header Comma separated list of attribute=header pairs ...

This docker image can be used as a standalone proxy for an nginx auth_request authentication. You supply it a UW-registered SAML Entity ID and ACS postback URL, the proxy will take care of the rest.