container/build.sh: use UTC dates for tags

Do not rely on the builder host's local timezone setting.

Signed-off-by: Ken Dreyer <kdreyer@ibm.com>
(cherry picked from commit fb4ec711176d5f87c3ab7d02d64d8e16dea58313)

diff --git a/container/build.sh b/container/build.sh
index b3044ff9cfb0f05c0ad07b04837dbc871ba43d74..d7712524e4dce1ec0a95cb801128803db820d8c3 100755 (executable)
--- a/container/build.sh
+++ b/container/build.sh
@@ -142,7 +142,7 @@ eval ${vars}
 fromtag=${CEPH_CONTAINER_FROM_IMAGE##*/}
 # translate : to -
 fromtag=${fromtag/:/-}
-builddate=$(date +%Y%m%d)
+builddate=$(date -u +%Y%m%d)
 local_tag=${fromtag}-${CEPH_CONTAINER_CEPH_REF}-${CEPH_CONTAINER_ARCH}-${builddate}
 
 repopath=${CONTAINER_REPO_HOSTNAME}/${CONTAINER_REPO_ORGANIZATION}