diff --git a/Dockerfile b/Dockerfile
index d22c74e..3428f04 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -79,6 +79,9 @@ RUN composer dump-autoload --optimize --no-dev \
 # --- Built frontend: served from the web root next to the API front controller
 COPY --from=frontend /web/dist/ ./public/
 
+# Apache listens on 80 -- declare it so `docker run -P` and tooling pick it up.
+EXPOSE 80
+
 ENTRYPOINT ["/usr/local/bin/entrypoint.sh"]
 CMD ["httpd", "-D", "FOREGROUND"]