Resolve BMK-253

Attempt to resolve BMK-253 by forcing Singularity 3.2.1 from the OSG repo.

build-executor/image/Dockerfile

@@ -32,10 +32,14 @@ RUN sed -e 's@inet_interfaces = localhost@#inet_interfaces = localhost@' -e 's@i
 # Add singularity software and configuration (BMK-77 and BMK-145)
 # Merge here the singularity Dockerfile fragments developed by Chris Hollowell <hollowec@bnl.gov>
 
-RUN yum install -y singularity-runtime && yum clean all
-
-RUN sed -i -e 's/underlay = no/underlay = yes/g' /etc/singularity/singularity.conf
-RUN sed -i -e 's/overlay = try/overlay = no/g' /etc/singularity/singularity.conf
+# Force a specific verison of Singularity for now to resolve BMK-253
+#RUN yum install -y singularity-runtime && yum clean all
+RUN rpm --import https://repo.opensciencegrid.org/osg/3.4/RPM-GPG-KEY-OSG
+RUN yum install -y https://repo.opensciencegrid.org/osg/3.4/el7/release/x86_64/singularity-3.2.1-1.1.osg34.el7.x86_64.rpm
+
+# Not necessay in CC7 as OverlayFS is supported
+#RUN sed -i -e 's/underlay = no/underlay = yes/g' /etc/singularity/singularity.conf
+#RUN sed -i -e 's/overlay = try/overlay = no/g' /etc/singularity/singularity.conf
 
 RUN pip install dictdiffer pyyaml
 # No ENTRYPOINT