Add new containers to streamline setup

client/containers/mrvadata/Dockerfile

@@ -0,0 +1,22 @@
+# Use a minimal base image
+FROM busybox
+
+# This data container holds data from existing runs.  It cannot be built without
+# ready data.
+
+# Before running docker build, make sure you have set up the directory mirrors
+# dbstore-data and scratch.
+
+# E.g.:
+    # cd ~/work-gh/mrva/mrvacommander/client/containers/mrvadata/
+    # mkdir tmp
+    # cp -r ../../../dbstore-data   tmp
+    # cp -r ../../qldbtools/scratch tmp
+
+# Mirror parts of the host directory structure in the container
+COPY tmp/dbstore-data /data/mrvacommander/dbstore-data
+
+COPY tmp/scratch /data/mrvacommander/qldbtools/scratch
+
+# Just run sh if this container is ever started
+CMD ["sh"]