[gimp-web/oscp] Add USER to docs_build Dockerfile for testing.docs.gimp.org

[Jacob Boerema <jboerema src gnome org>]

commit 57da1f45d069e5746493cd413af0a8bf12514932
Author: Jacob Boerema <jgboerema gmail com>
Date:   Thu Jun 2 22:22:15 2022 -0400

    Add USER to docs_build Dockerfile for testing.docs.gimp.org
    
    Let's see if this helps. This is also in docs.gimp.org.

 testing.docs.gimp.org/docs_build/Dockerfile | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/testing.docs.gimp.org/docs_build/Dockerfile b/testing.docs.gimp.org/docs_build/Dockerfile
index 32fdcfb7..01219c22 100644
--- a/testing.docs.gimp.org/docs_build/Dockerfile
+++ b/testing.docs.gimp.org/docs_build/Dockerfile
@@ -7,4 +7,5 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
 
 ADD entrypoint.sh /entrypoint.sh
 
+USER 1001
 ENTRYPOINT ["/entrypoint.sh"]