diff --git a/Dockerfile b/Dockerfile
index 21ced1fbddd431428b1f9a3015aed5e3a1b4aea7..1379879934547dfc3dc61585ab9a0ce840cf05c5 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -16,4 +16,5 @@ FROM caddy:alpine AS serve
 COPY --from=build /src/public/ /srv/
 COPY Caddyfile /etc/caddy/Caddyfile
 
+RUN caddy validate --config /etc/caddy/Caddyfile
 RUN caddy fmt --overwrite /etc/caddy/Caddyfile