When dry running publish, tag may not exist
diff --git a/publish.sh b/publish.sh
index f89942b..24a0d35 100755
--- a/publish.sh
+++ b/publish.sh
@@ -81,8 +81,14 @@
tag-and-push() {
local source=$1
local target=$2
- local digest_source; digest_source=$(get-digest "${source}")
- local digest_target; digest_target=$(get-digest "${target}")
+ local digest_source
+ local digest_target
+
+ # if tag doesn't exist yet, ie. dry run
+ if ! digest_source=$(get-digest "${source}" 2>/dev/null); then
+ digest_source=""
+ fi
+ digest_target=$(get-digest "${target}")
if [ "$digest_source" == "$digest_target" ]; then
echo "Images ${source} [$digest_source] and ${target} [$digest_target] are already the same, not updating tags"
else