diff --git a/Dockerfile b/Dockerfile
index acd4a26..4e8d647 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -75,11 +75,4 @@ COPY --from=builder --chown=nobody:root /app/priv /app/priv
 
 USER nobody
 
-# EPMD (elixir cluster)
-EXPOSE 4369
-# API
-EXPOSE 8080
-# CheSSH!
-EXPOSE 34355
-
 CMD /app/bin/chessh eval "Chessh.Release.migrate" && /app/bin/chessh start
diff --git a/buildscripts/build/build.sh b/buildscripts/build/build.sh
index 107de30..482a577 100755
--- a/buildscripts/build/build.sh
+++ b/buildscripts/build/build.sh
@@ -151,7 +151,7 @@ function build_server() {
     temp_file=$(mktemp)
     
     cp "${build_dir}/.env" $temp_file
-    printf "\nNODE_ID=$node_conn\nRELEASE_NODE=chessh@192.168.100.${node_id}\nRELEASE_DISTRIBUTION=name\n" >> $temp_file
+    printf "\nNODE_ID=$node_conn\nRELEASE_NODE=chessh@192.168.100.${node_id}\nRELEASE_DISTRIBUTION=name\nRELEASE_COOKIE=chessh\n" >> $temp_file
     scp $ssh_opts $temp_file $node_conn:~/.env
 
     cp "${build_dir}/chessh.service" $temp_file