Update README.md

Fix typo in command line!

diff --git a/docker/README.md b/docker/README.md
index 6caf1c4d6639e930a267c82ee01aa4ad8cff5d44..51aee15d29fffaf51c72b9af824a3fcd09749c92 100644 (file)
--- a/docker/README.md
+++ b/docker/README.md
@@ -36,7 +36,7 @@ Command line options will be passed to Shairport Sync. Here is an example:
 ```
 $ docker run -d --restart unless-stopped --net host --device /dev/snd \
     mikebrady/shairport-sync:latest \
-    -v --statistics -a DenSystem -d hw:0 -c PCM
+    -v --statistics -a DenSystem -- -d hw:0 -c PCM
 ```
 This will send audio to alsa hardware device `hw:0` and make use of the that device's mixer control called `PCM`. The service will be visible as `DenSystem` on the network.