[guadec-web/oscp-2018] Drop &&, not passing any other command

[Andrea Veri <averi src gnome org>]

commit 4474e9e48d43e755bfa3c2bdc4285474ec4b15a6
Author: Andrea Veri <averi redhat com>
Date:   Fri Sep 28 14:28:44 2018 +0200

    Drop &&, not passing any other command

 Dockerfile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/Dockerfile b/Dockerfile
index ba71965..779360a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -17,7 +17,7 @@ COPY entrypoint.sh /
 ENV GUADEC_HOME=/guadec-web \
     LANG=C
 
-RUN useradd -u 1001 -g 0 -d ${GUADEC_HOME}/ -r -s /usr/sbin/nologin guadecweb && \
+RUN useradd -u 1001 -g 0 -d ${GUADEC_HOME}/ -r -s /usr/sbin/nologin guadecweb
 
 USER 1001