Allow to pass command line arguments to dockerized firefox (#481)

* Allow to pass command line arguments to dockerized firefox

* Double quoted

Author: crossminds

Diff for: firefox/entrypoint.sh

@@ -1,7 +1,7 @@
 #!/bin/bash
 
 if [[ -e /dev/snd ]]; then
-	exec apulse firefox
+	exec apulse firefox "$@"
 else
-	exec firefox
+	exec firefox "$@"
 fi