diff --git a/docker/supervisord.conf b/docker/supervisord.conf
index 75303377..c1e29880 100644
--- a/docker/supervisord.conf
+++ b/docker/supervisord.conf
@@ -27,6 +27,7 @@ environment=NODE_ENV="production"
 
 [program:caddy]
 command=/usr/sbin/caddy run --config /etc/caddy/Caddyfile
+environment=XDG_DATA_HOME="/data"
 autostart=true
 autorestart=true
 stdout_logfile=/dev/stdout