docker-compose.yml

  front:
    image: nginx
    container_name: nginx-proxy
    restart: always
    command: consul-template -consul-addr=consul:8500 -template /etc/nginx/upstream.ctmpl:/etc/nginx/upstream.conf  -exec "/usr/sbin/nginx -c /etc/nginx/nginx.conf -g 'daemon off;'"
    networks:
      - backend
      - frontend
    depends_on:
      - web
    ports:
      - "443:443"
    volumes:
      - ./config/nginx:/etc/nginx/
      - static:/opt/noc
      - assets:/usr/lib/python2.7/site-packages/django

Dockerfile

FROM nginx:alpine

ENV CONSUL_TEMPLATE_VERSION=0.18.5
RUN apk add --update curl unzip ca-certificates \
    && curl -Ls https://releases.hashicorp.com/consul-template/${CONSUL_TEMPLATE_VERSION}/consul-template_${CONSUL_TEMPLATE_VERSION}_linux_amd64.zip -o consul-template.zip \
    && unzip consul-template.zip -d /bin \ 
    && rm -f consul-template* \
    && apk del curl unzip \
    && rm -rf /var/cache/apk/*

nginx.conf

include upstream.conf;

.....

server {
    listen 443;

upstream.ctmpl

upstream grafana {
   {{range service "grafana"}}server {{.Address}}:{{.Port}} weight={{keyOrDefault (printf "noc/nginx/%s/grafana/weight" .Node) "1"}} max_fails=3 fail_timeout=10;
   {{else}}server 127.0.0.1:65535; # check consul for grafana service{{end}}
}

upstream notebook {
   {{range service "notebook"}}server {{.Address}}:{{.Port}}  max_fails=3 fail_timeout=10;
   {{else}}server 127.0.0.1:65535; # check consul for notebook service{{end}}
}