feat: make Docker container port configurable via PORT env var

fix: preserve original filename when downloading processed files

entrypoint.sh

@@ -34,6 +34,12 @@ chown -R "$PUID:$PGID" \
     /usr/share/nginx/html \
     /etc/nginx/nginx.conf
 
+PORT=${PORT:-8080}
+if [ "$PORT" != "8080" ]; then
+    echo "Changing Nginx listen port to $PORT"
+    sed -i "s/listen 8080/listen $PORT/g; s/listen \[::\]:8080/listen [::]:$PORT/g" /etc/nginx/nginx.conf
+fi
+
 if [ "$DISABLE_IPV6" = "true" ]; then
     echo "Disabling Nginx IPv6 listener"
     sed -i '/^[[:space:]]*listen[[:space:]]*\[::\]:[0-9]*/s/^/#/' /etc/nginx/nginx.conf