[VOL-4648] Add connection to sysrepo and subscribe to NETCONF 'get' requests with dummy callback

Change-Id: I9124d9b9430ee1358885bdb5c65dedfb3c5d3978
diff --git a/.dockerignore b/.dockerignore
index 1d6b926..171d965 100644
--- a/.dockerignore
+++ b/.dockerignore
@@ -1,3 +1,4 @@
 build/*
+!build/yang-files*
 tests/*
 docs/*
\ No newline at end of file