Update Dockerfile

Dockerfile

@@ -32,7 +32,7 @@ COPY deployment/docker/serve.sh .
 RUN chmod +x ./serve.sh
 
 # Ensure nginx can write to necessary directories
-RUN mkdir -p /var/lib/nginx/body \
+RUN mkdir -p /var/lib/nginx/body /var/lib/nginx/proxy \
     && chown -R www-data:www-data /var/lib/nginx \
     && chown -R www-data:www-data /var/log/nginx \
     && chmod -R 755 /var/lib/nginx \