diff --git a/Dockerfile b/Dockerfile
index 7b3869e..6e49774 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM lsiobase/alpine:3.11
+FROM lsiobase/alpine:3.11
 
 LABEL maintainer "Nicolas Coutin <ilshidur@gmail.com>"
 
@@ -16,6 +16,7 @@ EXPOSE 9001 9030
 # TOR configuration through environment variables.
 ENV RELAY_TYPE relay
 ENV TOR_ORPort 9001
+ENV TOR_DirPort 9030
 ENV TOR_DataDirectory /data
 ENV TOR_ContactInfo "Random Person nobody@tor.org"
 ENV TOR_RelayBandwidthRate "100 KBytes"