[guadec-web/oscp-2018] Correct syntax

[Andrea Veri <averi src gnome org>]

commit 11b574676080edb23a644a3252b76dc79bdfd1f8
Author: Andrea Veri <averi redhat com>
Date:   Fri Sep 28 15:10:40 2018 +0200

    Correct syntax

 Dockerfile | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
---
diff --git a/Dockerfile b/Dockerfile
index c80b7ec..cf9ef78 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -36,4 +36,5 @@ WORKDIR ${GUADEC_HOME}/public
 
 EXPOSE 8080
 
-ENTRYPOINT "python3 -m pelican.server"
+ENTRYPOINT ["python", -m"]
+CMD ["pelican.server"]