diff --git a/Dockerfile b/Dockerfile
index 968065720..b9471f77e 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -55,6 +55,7 @@ RUN apk add --no-cache redis
 RUN mkdir /appdata
 RUN mkdir /appdata/db
 RUN mkdir /appdata/redis
+VOLUME /appdata
 
 # Don't run production as root
 RUN addgroup --system --gid 1001 nodejs