Allow setting the auth proxy header

Author: rolandgeider

config/prod.env

@@ -125,6 +125,17 @@ SITE_URL=http://localhost
 ACCESS_TOKEN_LIFETIME=10 # The lifetime duration of the access token, in minutes
 REFRESH_TOKEN_LIFETIME=24 # The lifetime duration of the refresh token, in hours
 
+#
+# Auth Proxy Authentication
+#
+# Please read the documentation before enabling this feature:
+# https://wger.readthedocs.io/en/latest/administration/auth_proxy.html
+AUTH_PROXY_HEADER=''
+AUTH_PROXY_TRUSTED_IPS=''
+AUTH_PROXY_CREATE_UNKNOWN_USER=False
+AUTH_PROXY_USER_EMAIL_HEADER=''
+AUTH_PROXY_USER_NAME_HEADER=''
+
 #
 # Other possible settings