Merge pull request #1795 from henchbot/repo2docker_bump

repo2docker: 2021.01.0...2021.01.0-7.gac41c20

Author: betatim

mybinder/values.yaml

@@ -87,7 +87,7 @@ binderhub:
         - ^https%3A%2F%2Fframagit.org%2FCecGhesq%2Flic_mdf_nsi_1.*
     BinderHub:
       use_registry: true
-      build_image: jupyter/repo2docker:2021.01.0
+      build_image: jupyter/repo2docker:2021.01.0-7.gac41c20
       per_repo_quota: 100
       per_repo_quota_higher: 200
       build_memory_limit: "3G"