diff --git a/README.md b/README.md
index 1c7e7c8..2a7de75 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-# Yama
+# Megabit OS
 
 Raspberry Pi 向け OS のビルドするためのツール群
 
diff --git a/apkovl/etc/apk/world b/apkovl/etc/apk/world
index 5534b63..222f2dc 100644
--- a/apkovl/etc/apk/world
+++ b/apkovl/etc/apk/world
@@ -1,4 +1,5 @@
 alpine-base
 i2c-tools
 openssh
+rsync
 wpa_supplicant
diff --git a/apkovl/etc/init.d/megabit b/apkovl/etc/init.d/megabit
new file mode 100755
index 0000000..93e0760
--- /dev/null
+++ b/apkovl/etc/init.d/megabit
@@ -0,0 +1,4 @@
+#!/sbin/openrc-run
+name=megabit
+command="/usr/local/bin/megabit"
+pidfile="/var/run/megabit.pid"
diff --git a/apkovl/etc/init.d/megabit-sync b/apkovl/etc/init.d/megabit-sync
new file mode 100755
index 0000000..6153b82
--- /dev/null
+++ b/apkovl/etc/init.d/megabit-sync
@@ -0,0 +1,11 @@
+#!/sbin/openrc-run
+name=megabit-sync
+command="/usr/local/bin/megabit-sync"
+pidfile="/var/run/megabit-sync.pid"
+
+start_pre() {
+  mkdir -p /mnt/tmp
+  mount /usr/share/megabit/tmp.img /mnt/tmp
+  modprobe -r g_mass_storage
+  modprobe g_mass_storage file=/usr/share/megabit/tmp.img
+}
diff --git a/apkovl/etc/modprobe.d/g_mass_storage.conf b/apkovl/etc/modprobe.d/g_mass_storage.conf
deleted file mode 100644
index cf8ee44..0000000
--- a/apkovl/etc/modprobe.d/g_mass_storage.conf
+++ /dev/null
@@ -1 +0,0 @@
-options g_mass_storage file=/dev/mmcblk0p1
diff --git a/apkovl/etc/modules-load.d/g_mass_storage.conf b/apkovl/etc/modules-load.d/g_mass_storage.conf
deleted file mode 100644
index fd5ae93..0000000
--- a/apkovl/etc/modules-load.d/g_mass_storage.conf
+++ /dev/null
@@ -1 +0,0 @@
-g_mass_storage
diff --git a/apkovl/etc/runlevels/default/megabit b/apkovl/etc/runlevels/default/megabit
new file mode 120000
index 0000000..fb1ac2b
--- /dev/null
+++ b/apkovl/etc/runlevels/default/megabit
@@ -0,0 +1 @@
+/etc/init.d/megabit
\ No newline at end of file
diff --git a/apkovl/etc/runlevels/default/megabit-sync b/apkovl/etc/runlevels/default/megabit-sync
new file mode 120000
index 0000000..e38d827
--- /dev/null
+++ b/apkovl/etc/runlevels/default/megabit-sync
@@ -0,0 +1 @@
+/etc/init.d/megabit-sync
\ No newline at end of file
diff --git a/apkovl/usr/local/bin/megabit b/apkovl/usr/local/bin/megabit
new file mode 100755
index 0000000..1e20220
--- /dev/null
+++ b/apkovl/usr/local/bin/megabit
@@ -0,0 +1,4 @@
+#!/bin/sh
+export NODE_PATH=$(npm root -g)
+nodemon --delay 1 --watch /tmp --signal SIGTERM --exec 'node /tmp/index.js || true' &
+echo $! > /var/run/megabit.pid
diff --git a/apkovl/usr/local/bin/megabit-sync b/apkovl/usr/local/bin/megabit-sync
new file mode 100755
index 0000000..9aa4cc3
--- /dev/null
+++ b/apkovl/usr/local/bin/megabit-sync
@@ -0,0 +1,3 @@
+#!/bin/sh
+nodemon --delay 1 --watch /usr/share/megabit/tmp.img --signal SIGTERM --exec 'umount /mnt/tmp; mount /usr/share/megabit/tmp.img /mnt/tmp; rsync -a --delete --exclude=node_modules/ /mnt/tmp/ /tmp/' &
+echo $! > /var/run/megabit-sync.pid
diff --git a/docker-compose.yml b/docker-compose.yml
index f59e17d..449b09f 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -16,7 +16,9 @@ services:
       - ./dist/overlay.img:/overlay.img
     privileged: true
     command: |
-      sh -c '
-        mount -a \
-          && apk add g++ linux-headers make nodejs npm python3
+      sh -exc '
+        mkdir -p /mnt/overlay
+        mount -a
+        apk add g++ linux-headers make nodejs npm python3
+        npm install -g megabit nodemon
       '
diff --git a/fstab b/fstab
index 5618065..9e9d56c 100644
--- a/fstab
+++ b/fstab
@@ -1,2 +1,2 @@
-/overlay.img	/mnt	ext4	rw,relatime,errors=remount-ro	0 0
-overlay	/usr	overlay	lowerdir=/usr,upperdir=/mnt/upper/usr,workdir=/mnt/work/usr	0 0
+/overlay.img	/mnt/overlay	ext4	rw,relatime,errors=remount-ro	0 0
+overlay	/usr	overlay	lowerdir=/usr,upperdir=/mnt/overlay/upper/usr,workdir=/mnt/overlay/work/usr	0 0
diff --git a/overlay.img.gz b/overlay.img.gz
index 1b6992b..84846ef 100644
Binary files a/overlay.img.gz and b/overlay.img.gz differ