added binary executable files to .dockerignore

fixed #5038

License: MIT
Signed-off-by: Rob Deutsch <rdeutschob@gmail.com>

.dockerignore

@@ -5,3 +5,9 @@ Dockerfile.fast
 !.git/refs/
 !.git/packed-refs
 test/sharness/lib/sharness/
+
+# The Docker client might not be running on Linux
+# so delete any compiled binaries
+bin/gx
+bin/gx*
+bin/tmp