diff --git a/dev/.gitignore b/dev/.gitignore
new file mode 100644
index 0000000..1269488
--- /dev/null
+++ b/dev/.gitignore
@@ -0,0 +1 @@
+data
diff --git a/dev/start b/dev/start
index 0955193..8388934 100755
--- a/dev/start
+++ b/dev/start
@@ -9,12 +9,15 @@ fi
 
 export $(cat ../.env | sed 's/#.*//g' | xargs)
 
+mkdir -p "./data"
+
 docker run --rm -it \
     --name="neko_rooms_server" \
     -v "${PWD}/../:/app" \
 	-e "TZ=${TZ}" \
 	-e "NEKO_ROOMS_EPR=${NEKO_ROOMS_EPR}" \
 	-e "NEKO_ROOMS_NAT1TO1=${NEKO_ROOMS_NAT1TO1}" \
+	-e "NEKO_ROOMS_INSTANCE_DATA=`realpath ./data`" \
 	-e "NEKO_ROOMS_TRAEFIK_DOMAIN=${NEKO_ROOMS_TRAEFIK_DOMAIN}" \
 	-e "NEKO_ROOMS_TRAEFIK_ENTRYPOINT=${NEKO_ROOMS_TRAEFIK_ENTRYPOINT}" \
 	-e "NEKO_ROOMS_TRAEFIK_NETWORK=${NEKO_ROOMS_TRAEFIK_NETWORK}" \