remote-agent: Add user to docker group

Change-Id: I5610b2b31cccaef983a8b550d90160775c76934d
diff --git a/src/dockerfiles/remote_agent/Dockerfile b/src/dockerfiles/remote_agent/Dockerfile
index ac9bdde..c9f0bdf 100644
--- a/src/dockerfiles/remote_agent/Dockerfile
+++ b/src/dockerfiles/remote_agent/Dockerfile
@@ -61,6 +61,10 @@
 RUN apt autoremove -yq
 RUN apt-get clean
 
+# Need to be in docker group to use docker API
+RUN addgroup --gid 412 docker
+RUN usermod -aG docker moblab
+
 RUN mkdir /moblab
 RUN mkdir /var/log/moblab
 RUN chown -R moblab /moblab