message: UI conf-builder.sh now has sensible default for API_HOST
diff: #!/bin/bash
  -
  -# if we are linked, use that info
  -#linked containers now use hostnames
  -export API_HOST=hygieia-api
  -export API_PORT=8080
  -
  -sed s:API_HOST:${API_HOST:-127.0.0.1}: /etc/nginx/conf.d/default.conf.templ |\
  +sed s:API_HOST:${API_HOST:-hygieia-api}: /etc/nginx/conf.d/default.conf.templ |\
  sed s:API_PORT:${API_PORT:-8080}: > /etc/nginx/conf.d/default.conf
  