cmd-build: Fix new builds from scratch

Minor regression from #515.
coreos · May 27, 2019 · 17f54f4 · 17f54f4
1 parent de8f556
commit 17f54f4
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/src/cmd-build b/src/cmd-build
@@ -196,6 +196,8 @@ if [ -n "${previous_build}" ]; then
     rpm-ostree --repo="${tmprepo}" db diff --format=json \
             "${previous_commit}" "${commit}" | \
         jq '{pkgdiff: .pkgdiff}' > tmp/diff.json
+else
+    echo '{}' > tmp/diff.json
 fi
 
 image_input_checksum=$( (echo "${commit}" && echo "${image_config_checksum}") | sha256sum_str)