diff --git a/Dockerfile b/Dockerfile
index 86d881c..800a549 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,19 +1,18 @@
 FROM nginx:alpine3.22
+
+ARG RELEASE_TAG
+
 COPY ./content /usr/share/nginx/html
 RUN \
   cd /usr/share/nginx/html && \
   ./snippet-indexer.sh && \
-  sed -i 's,%TAG%,'$RELEASE_TAG','g about.md
-
-# ------------
-# prepare for rootless operations
-RUN \
+  sed -i 's,%TAG%,'${RELEASE_TAG}','g about.md && \
   chown -R nobody:nobody /var/cache/nginx /var/log/nginx && \
   sed -i 's/listen\s\+80;/listen 8080;/' /etc/nginx/conf.d/default.conf && \
   sed -i 's/index  index.html index.htm;/index   mdwiki.html;/' /etc/nginx/conf.d/default.conf && \
   sed -i 's,pid\s\+/run/nginx.pid;,pid /tmp/nginx.pid;,' /etc/nginx/nginx.conf 
+
 USER nobody
-# ------------
 EXPOSE 8080