Bind-mount /run/supervisor into Supervisor container (#167)

Supervisor creates its API sockets (e.g. core.sock) in /run/os and
bind-mounts the same host directory (/run/supervisor) into the Home
Assistant Core container. Without the mount on the Supervisor side, the
directory on the host is never populated and starting Core fails with
"bind source path does not exist: /run/supervisor". This matches the
production hassio-supervisor installer.

Author: agners

apps/rootfs/usr/bin/supervisor_run

@@ -16,6 +16,7 @@ function run_supervisor() {
         --security-opt apparmor=unconfined \
         -v /run/docker.sock:/run/docker.sock:rw \
         -v /run/dbus:/run/dbus:ro \
+        -v /run/supervisor:/run/os:rw \
         -v /run/udev:/run/udev:ro \
         -v /mnt/supervisor:/data:rw \
         -v /etc/machine-id:/etc/machine-id:ro \

supervisor/rootfs/usr/bin/supervisor_run

@@ -51,6 +51,7 @@ function run_supervisor() {
         --security-opt apparmor=unconfined \
         -v /run/docker.sock:/run/docker.sock:rw \
         -v /run/dbus:/run/dbus:ro \
+        -v /run/supervisor:/run/os:rw \
         -v /run/udev:/run/udev:ro \
         -v "/mnt/supervisor":/data:rw \
         -v /etc/machine-id:/etc/machine-id:ro \