[PATCH 3/3] build/json: preserve existing profiles.json data

[Moritz Warning]

The OpenWrt Image Builder only builds images for one device per call.
This causes the profiles.json files to only contain the data of the
last device that was build.

Signed-off-by: Moritz Warning <moritzwarning at web.de>
---
 scripts/json_overview_image_info.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/scripts/json_overview_image_info.py b/scripts/json_overview_image_info.py
index 7741154f61..47b5899981 100755
--- a/scripts/json_overview_image_info.py
+++ b/scripts/json_overview_image_info.py
@@ -18,6 +18,10 @@ assert getenv("WORK_DIR"), "$WORK_DIR required"
 def get_output(work_dir):
     output = None

+    # preserve existing profiles.json file data
+    if output_path.is_file():
+        output = json.loads(output_path.read_text())
+
     for json_file in work_dir.glob("*.json"):
         image_info = json.loads(json_file.read_text())

--
2.30.0