Implemented phase 4 for the POC prototype in the Website service.

Services/Website/.env.local

@@ -108,4 +108,10 @@ DATABASE_PORT=5432
 DATABASE_TLS=off
 
 # Username of the database to connect as.
-DATABASE_USERNAME=ccn
+DATABASE_USERNAME=ccn
+
+# --- Passkeys ----------------------------------------------------------------
+
+# Origin the sign-in screen is served at; browsers bind passkeys to it.
+# WebAuthn only runs on HTTPS or on localhost (not 127.0.0.1).
+PASSKEYS_ORIGIN=http://localhost:8080