diff --git a/biosimdb_interface/static/js/form/metadata.js b/biosimdb_interface/static/js/form/metadata.js
index 3b0d553..4f1d3a7 100644
--- a/biosimdb_interface/static/js/form/metadata.js
+++ b/biosimdb_interface/static/js/form/metadata.js
@@ -445,6 +445,9 @@ function requireExtraction(form) {
  */
 function validateAndSubmit(form, onSuccess) {
     const formData = addWorkflowId(new FormData(form));
+    // Files were already stored server-side by extraction; don't re-upload them.
+    formData.delete('topology');
+    formData.delete('trajectory[]');
     formData.append('save', '1');
     return fetch(window.APPLICATION_BASE + '/webform', { method: 'POST', body: formData })
         .then(r => r.json())
diff --git a/docker/Dockerfile b/docker/Dockerfile
index 7a27e39..775cae7 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -92,4 +92,4 @@ ENV PORT=${PORT} \
 
 EXPOSE ${PORT}
 
-CMD ["sh", "-c", "gunicorn --bind 0.0.0.0:$PORT --worker-class gthread --workers 2 --threads 4 --timeout 900 'biosimdb_interface:create_app()'"]
+CMD ["sh", "-c", "gunicorn --bind 0.0.0.0:$PORT --timeout 0 'biosimdb_interface:create_app()'"]