buildable docker compose

docker-entrypoint.sh

@@ -2,7 +2,7 @@
 # Render config templates with environment variables, then start nginx.
 set -e
 
-envsubst '${API_UPSTREAM}' < /etc/nginx/conf.d/nginx.conf.template > /etc/nginx/conf.d/default.conf
+sed "s|__API_UPSTREAM__|${API_UPSTREAM}|g" /etc/nginx/conf.d/nginx.conf.template > /etc/nginx/conf.d/default.conf
 envsubst '${API_PUBLIC_URL}' < /usr/share/nginx/html/config.json.template > /usr/share/nginx/html/config.json
 
 exec nginx -g 'daemon off;'