[indico-web] worker: Point INDICO_CONFIG to correct file

[Bartłomiej Piotrowski <bpiotrowski src gnome org>]

commit b615b89c5eb170b768303ba3f3712db4f2693104
Author: Bartłomiej Piotrowski <bpiotrowski gnome org>
Date:   Mon Dec 2 15:52:38 2019 +0100

    worker: Point INDICO_CONFIG to correct file

 worker/Dockerfile | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/worker/Dockerfile b/worker/Dockerfile
index a2a9b1c..7bb0597 100644
--- a/worker/Dockerfile
+++ b/worker/Dockerfile
@@ -32,3 +32,5 @@ COPY run_indico.sh run_celery.sh set_user.sh /opt/indico/
 RUN chmod g=u /etc/passwd && chmod 755 /opt/indico/*.sh
 
 EXPOSE 59999
+
+ENV INDICO_CONFIG="/opt/indico/etc/indico.conf"