Dockerfile: $PRIMARY_HOST

Author: sorah

Dockerfile

@@ -7,4 +7,5 @@ COPY config/nginx.conf.erb /etc/nginx/nginx.conf.erb
 COPY config/force_https.conf /etc/nginx/force_https.conf
 RUN /docker-entrypoint.d/rko-router.sh
 RUN nginx -c /etc/nginx/nginx.conf
+ENV PRIMARY_HOST rko-router.rubykaigi.org
 EXPOSE 8080