Map /etc/machine-id into supervisor/cli (#60)

* Map /etc/machine-id into supervisor/cli

* Update hassos-cli

* Update hassos-supervisor

buildroot-external/rootfs-overlay/usr/sbin/hassos-cli

@@ -6,7 +6,6 @@ CONFIG_FILE=/mnt/data/hassos.json
 CLI="$(jq --raw-output '.cli' ${CONFIG_FILE})"
 DOCKER_ARGS="$(jq --raw-output '.cli_args // empty' ${CONFIG_FILE})"
 APPARMOR="$(jq --raw-output '.cli_apparmor // "docker-default"' ${CONFIG_FILE})"
-MACHINE_ID="$(cat /etc/machine-id)"
 
 CLI_DATA=/mnt/data/cli
 mkdir -p ${CLI_DATA}
@@ -16,7 +15,7 @@ docker run \
     --rm -ti --init \
     --security-opt apparmor="${APPARMOR}" \
     -v ${CLI_DATA}:/data \
-    -e MACHINE_ID=${MACHINE_ID} \
+    -v /etc/machine-id:/etc/machine-id:ro \
     $DOCKER_ARGS \
     ${CLI}