Sorry, I unmarked the answer in case you can't see my reply. Sorry.

At the same time, I also tried the SQLite database. I downloaded the movie database in the technical document and put it in searx/data. I directly used the default code in setting.yml and then performed a docker build to build an image. However, when I used my own image, the following problem still occurred. I am very sorry to cause you so much trouble, but I hope to get your help.

The following picture shows a problem similar to MySQL.

Sorry, I can't reproduce your issue:

$ cd searx/data/
$ curl "https://liste.mediathekview.de/filmliste-v2.db.bz2" -o filmliste-v2.db.bz2
$ bunzip2 filmliste-v2.db.bz2 

and in the settings ..

diff --git a/searx/settings.yml b/searx/settings.yml
index 131ee741c..654e1f3ca 100644
--- a/searx/settings.yml
+++ b/searx/settings.yml
@@ -1727,20 +1727,20 @@ engines:
   #   https://liste.mediathekview.de/filmliste-v2.db.bz2
   # and unpack into searx/data/filmliste-v2.db
   # Query to test: "!demo concert"
-  #
-  # - name: demo
-  #   engine: sqlite
-  #   shortcut: demo
-  #   categories: general
-  #   result_template: default.html
-  #   database: searx/data/filmliste-v2.db
-  #   query_str:  >-
-  #     SELECT title || ' (' || time(duration, 'unixepoch') || ')' AS title,
-  #            COALESCE( NULLIF(url_video_hd,''), NULLIF(url_video_sd,''), url_video) AS url,
-  #            description AS content
-  #       FROM film
-  #      WHERE title LIKE :wildcard OR description LIKE :wildcard
-  #      ORDER BY duration DESC
+
+  - name: demo
+    engine: sqlite
+    shortcut: demo
+    categories: general
+    result_template: default.html
+    database: searx/data/filmliste-v2.db
+    query_str:  >-
+      SELECT title || ' (' || time(duration, 'unixepoch') || ')' AS title,
+             COALESCE( NULLIF(url_video_hd,''), NULLIF(url_video_sd,''), url_video) AS url,
+             description AS content
+        FROM film
+       WHERE title LIKE :wildcard OR description LIKE :wildcard
+       ORDER BY duration DESC
 
   - name: tagesschau
     engine: tagesschau

then make run and in the WEB browser search for !demo concert

Thank you! The “make run” part has been successful.
However, during the process of “Build the image”,
I first performed “git clone https://github.com/searxng/searxng.git”,
then modified settings.yml and added searx/data/filmliste-v2.db, and then performed “make docker.build”.
The results are as follows:

bianbao@bianbao-virtual-machine:~/demo/searxng$ docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
searxng/searxng 2024.10.19-050451347 935fcc9bb94a 34 minutes ago 1.39GB
searxng/searxng latest 935fcc9bb94a 34 minutes ago 1.39GB
alpine 3.20 91ef0af61f39 6 weeks ago 7.8MB.

Then rename searxng/searxng:latest as bianbao/se:v19.
In another project, this part uses the searxng image developed by you. After I replace it with the image generated by myself, the demo still doesn't work.
Before：

After：


I don't know if there's an error when adding the demo engine and generating the image. Sorry to trouble you. I'd be extremely grateful if you could guide me again.

After I replace it with the image generated by myself, the demo still doesn't work.

Here at https://github.com/searxng/searxng/ we discuss issues related to the SearXNG core. To me it seems you have some trouble with your docker workflow / such topics might be better discussed in the community on Matrix #searxng:matrix.org.