Update Dockerfile

Dockerfile

@@ -67,7 +67,10 @@ RUN set -eu && \
     # Prepare nginx config slot so non-root users (e.g. UID 1000 in Spaces)
     # can write runtime site configs without permission errors.
     mkdir -p /etc/nginx/sites-enabled && \
-    chmod 0777 /etc/nginx/sites-enabled || true
+    chmod 0777 /etc/nginx/sites-enabled || true && \
+    # Ensure nginx runtime dirs are writable for unprivileged users
+    mkdir -p /var/lib/nginx/body /var/log/nginx /var/cache/nginx /var/run && \
+    chmod -R 0777 /var/lib/nginx /var/log/nginx /var/cache/nginx /var/run || true
 
 COPY --chmod=755 ./src /run/
 COPY --chmod=755 ./web /var/www/