Keycloak redirect problem with nomad-oasis behind ssl (traefik) proxy
The url returns with "502 Bad gateway nginx/1.13.9"
https://nomad.eln.data.fau.de/keycloak/auth/realms/nomad/protocol/openid-connect/auth?response_type=code&redirect_uri=http%3A%2F%2Fnomad.eln.data.fau.de%2Fnomad-oasis%2Fnorth%2Fhub%2Foauth_callback&client_id=nomad_public&state=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&scope=openid+profile