use the new RIFT OSM R3 repo

Signed-off-by: Jeremy Mordkoff <Jeremy.Mordkoff@riftio.com>
diff --git a/Dockerfile b/Dockerfile
index feb0700..6f18be5 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -2,12 +2,12 @@
 
 RUN apt-get update && apt-get -y install python3 curl build-essential apt-transport-https sudo
 RUN curl http://repos.riftio.com/public/xenial-riftware-public-key | apt-key add - && \
-	curl -o /etc/apt/sources.list.d/rift.list http://buildtracker.riftio.com/repo_file/ub16/OSM/ && \
+	curl -o /etc/apt/sources.list.d/rift.list http://buildtracker.riftio.com/repo_file/ub16/OSM3/ && \
 	apt-get update && \
 	apt-get -y install \
 		rw.tools-container-tools=5.2.0.0.71033 \
 		rw.tools-scripts=5.2.0.0.71033
 
-RUN /usr/rift/container_tools/mkcontainer --modes SO-dev --repo OSM --rw-version 5.2.0.0.71033
+RUN /usr/rift/container_tools/mkcontainer --modes SO-dev --repo OSM3 --rw-version 5.2.0.0.71033
 
 RUN chmod 777 /usr/rift /usr/rift/usr/share