ceph-container latest-master-devel not updating?

The latest docker.io/ceph/daemon-base:latest-master-devel appears to have been built last night (according to docker), but it contains { "ceph_version": "ceph version 15.1.0-1962-gbf6df4b (bf6df4b9422153f5672da72e06cdc498b05c2146) octopus (rc)", "image_id": "222e646fc8b24e51c5e8f21998dbaa3863bbd5113630b9eb31b2701004953aa0" } which is 5 days old at this point: commit bf6df4b9422153f5672da72e06cdc498b05c2146 Merge: c39f46fc6c7 7e30c261c0c Author: Lenz Grimmer <lgrimmer(a)suse.com> Date: Wed Mar 11 14:53:35 2020 +0100 Actual master contains commit 6421605d5f16396a285a9515bd210870f27f233d (refs/remotes/gh/master, refs/remotes/gh/HEAD) Merge: fae60f65f32 a19a81edcd0 Author: Kefu Chai <kchai(a)redhat.com> Date: Mon Mar 16 11:12:37 2020 +0800 Any idea what's going on? Thanks! sage