Fix bug with SA08 when updating prometheus.yaml

Change-Id: I167bf1adfa0d9abb02e143f56f5ed70217d1dbb1
Signed-off-by: garciadeblas <gerardo.garciadeblas@telefonica.com>
diff --git a/docker/LCM/Dockerfile b/docker/LCM/Dockerfile
index 03907d7..b6c9989 100644
--- a/docker/LCM/Dockerfile
+++ b/docker/LCM/Dockerfile
@@ -105,6 +105,9 @@
     mkdir /app/log && \
     chown -R appuser:appuser /app
 
+RUN mkdir /opt/prometheus
+RUN chown appuser: /opt/prometheus
+
 WORKDIR /app/osm_lcm
 
 # Changing the security context