Fix to docker import issues and swagger error

This is actually two fixes in one change:
1. Fixing the import issues in the docker containers, also cleaning
   it up.
2. Avoiding the creation of multiple swagger.json files by specifying
   which of the proto files represent the top-level service.

Change-Id: I9fec5cf48df127725673ba53f0e91d2ed2e275ad
diff --git a/chameleon/protos/schema.proto b/chameleon/protos/schema.proto
index 0c06feb..764f53f 100644
--- a/chameleon/protos/schema.proto
+++ b/chameleon/protos/schema.proto
@@ -17,6 +17,9 @@
     // Proto files
     repeated ProtoFile protos = 1;
 
+    // Name of proto file to generae swagger.json from
+    string swagger_from = 2;
+
 }
 
 // Schema services