Ensure destination image dump happens on the correct end

Previously, the dest image dump would always happen locally, no matter
which mode (push or pull) was in use.

That meant that in push mode, there was no remote file to rsync to,
resulting in a full rsync every time.

Author: justone

docker-sync

@@ -80,15 +80,15 @@ def main():
 				common_parent = get_common_parent(source_family,all_dest)
 				if common_parent:
 					print("Found common parent: %s"%common_parent[:20])
-					print("Dumping local parent".ljust(just_size,"."), end="", flush=True)
-					_, output = execute("docker save -o %s %s"%(file_name, common_parent))
+					print("Dumping common parent".ljust(just_size,"."), end="", flush=True)
+					_, output = execute("docker save -o %s %s"%(file_name, common_parent), ssh=dest)
 					check(output)
 				else:
 					print("Unable to find a common parent. Importing full image.")
 			else:
 				print("\n--> Updating '%s':\n"%name_tag)
 				print("Dumping dest image".ljust(just_size,"."), end="", flush=True)
-				_, output = execute("docker save -o %s %s"%(file_name, name_tag), ssh=source)
+				_, output = execute("docker save -o %s %s"%(file_name, name_tag), ssh=dest)
 				check(output)
 
 			print("Dumping source image".ljust(just_size,"."), end="", flush=True)