Add CANONICAL_DOMAIN variable and derive CANONICAL_ORIGIN from it

catalog/dags/common/loader/provider_details.py

@@ -124,7 +124,12 @@
 
 # User-Agent header for APIs that require it
 CONTACT_EMAIL = os.getenv("CONTACT_EMAIL")
-CANONICAL_ORIGIN = os.getenv("CANONICAL_ORIGIN", "https://openverse.org")
+
+CANONICAL_DOMAIN: str = os.getenv("CANONICAL_DOMAIN", "openverse.org")
+
+_proto = "http" if "localhost" in CANONICAL_DOMAIN else "https"
+CANONICAL_ORIGIN: str = f"{_proto}://{CANONICAL_DOMAIN}"
+
 UA_STRING = f"Openverse/0.1 ({CANONICAL_ORIGIN}; {CONTACT_EMAIL})"