diff --git a/docker/Dockerfile b/docker/Dockerfile
index 481c7b6bc..429d2f8a4 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -17,12 +17,7 @@ RUN pacman -Syyu --noconfirm
 
 RUN pacman -S --noconfirm git nodejs npm mongodb redis
 
-RUN echo '#!/bin/sh'                    >> /root/misskey.sh
-RUN echo 'redis-server --daemonize yes' >> /root/misskey.sh
-RUN echo 'mongod > /dev/null &'         >> /root/misskey.sh
-RUN echo 'cd /root/misskey'             >> /root/misskey.sh
-RUN echo 'npm start'                    >> /root/misskey.sh
-RUN echo 'tail -f /dev/null'            >> /root/misskey.sh
+COPY misskey.sh /root/misskey.sh
 RUN chmod u+x /root/misskey.sh
 
 EXPOSE 80
diff --git a/docker/misskey.sh b/docker/misskey.sh
new file mode 100644
index 000000000..82291e3a9
--- /dev/null
+++ b/docker/misskey.sh
@@ -0,0 +1,6 @@
+#!/bin/sh
+redis-server --daemonize yes
+mongod > /dev/null &
+cd /root/misskey
+npm start
+tail -f /dev/null