From e99c80799d632bcf90196a0d79c4cbfe8c252100 Mon Sep 17 00:00:00 2001
From: Tim Head <betatim@gmail.com>
Date: Wed, 29 May 2019 07:10:35 +0200
Subject: [PATCH] Add comment about supporting Zenodo instances not at
 zenodo.org

---
 repo2docker/contentproviders/zenodo.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/repo2docker/contentproviders/zenodo.py b/repo2docker/contentproviders/zenodo.py
index c3bbde6a..a1b60ece 100644
--- a/repo2docker/contentproviders/zenodo.py
+++ b/repo2docker/contentproviders/zenodo.py
@@ -16,6 +16,10 @@ class Zenodo(ContentProvider):
 
     def detect(self, doi, ref=None, extra_args=None):
         """Trigger this provider for things that resolve to a Zenodo record"""
+        # To support Zenodo instances not hosted at zenodo.org we need to
+        # start maintaining a list of known DOI prefixes and their hostname.
+        # We should also change to returning a complete `record_url` that
+        # fetch() can use instead of constructing a URL there
         doi = doi.lower()
         # 10.5281 is the Zenodo DOI prefix
         if doi.startswith("10.5281/"):