feat(stream): connect nginx with backend with controllers

nginx/docker-entrypoint.sh

@@ -0,0 +1,9 @@
+#!/bin/sh
+
+# must only run on certain env files, otherwise it replaces too much
+envsubst '${WEB_SERVER_URL}' \
+  < /etc/nginx/templates/default.conf.template \
+  > /etc/nginx/nginx.conf
+
+# daemon off required otherwise the container would exit immediately after nginx forks to background.
+exec nginx -g "daemon off;"