Improve Dockerfile to use multi-stage builds

Move the daemon build inside the daemon repo's own dockerfile.

Change-Id: Ib5aa002ec38a44c5ceafe7af0501d0a40e32a8c2
diff --git a/.dockerignore b/.dockerignore
index 88eda90..2b722b5 100644
--- a/.dockerignore
+++ b/.dockerignore
@@ -1,15 +1,10 @@
+.git/
+
 .idea/
 .vscode/
 
-daemon/build-local/
-daemon/contrib/native*
-daemon/contrib/i386*
-daemon/contrib/x86_64-*
-daemon/contrib/arm*
-daemon/contrib/aarch64*
-daemon/contrib/i686*
-
 node_modules/
 dist/
 
 client/dist/
+client/node_modules/