Started Dockerfile for backend service

Change-Id: I561f37c8026cc4ffbf3a9b80538094d24d076a32
diff --git a/.dockerignore b/.dockerignore
new file mode 100644
index 0000000..deae1cb
--- /dev/null
+++ b/.dockerignore
@@ -0,0 +1,7 @@
+*
+!/core
+!/full
+!/lite
+!/sample-index
+!/LICENSE
+!.dockerignore
\ No newline at end of file