fix/sounds_in_docker

default sounds only exist in ovos-audio, if running in docker ovos-workshop attempts to read the data from a nonexisting file

just try using self.acknowledge to demonstrate the issue

ovos_workshop/skills/ovos.py

@@ -1596,7 +1596,7 @@ def play_audio(self, filename: str, instant: bool = False):
         else:
             mtype = "mycroft.audio.queue"
 
-        if not send_binary:
+        if not send_binary or not isfile(filename):
             data = {"uri": filename}
         else:
             with open(filename, "rb") as f: