location-specific config does not seem to work

Dockerfile.prod

@@ -41,7 +41,7 @@ RUN echo "gzip_static on; gzip_proxied any;" >/etc/nginx/conf.d/gzip_static.conf
 # brotli_static not yet available in standard nginx distribution
 # RUN echo "brotli_static on; brotli_proxied any;" >/etc/nginx/conf.d/brotli_static.conf
 # Allow CORS requests
-RUN echo "server { location /talks.json { add_header 'Access-Control-Allow-Origin' '*' always; } }" >/etc/nginx/conf.d/cors.conf
+RUN echo "add_header 'Access-Control-Allow-Origin' '*' always;" >/etc/nginx/conf.d/cors.conf
 
 # Copy built site from build stage
 COPY --from=build /app/_site /usr/share/nginx/html