Docker: proxy_pass to another container - nginx: host not found in upstream

Question

(I know others have asked this question before, but I\'m not able to solve the problem using the solutions proposed in other posts, so i figured i would try to post my c

Answer 1

Hello your problem is with the port when you linked web:web you need to specify the port in which the container runs the service for exemple

    ports:
  - "8000:80"

means inside the container i can access on port 80 but in the host machine i can acess via 8000. here's the doc about linking two services in docker-compose

so if you want to access web in proxy nginx don't use 8000 but use :

upstream docker-web {
server web:80;
  }

instead, this should work :)

or (those are both the same)

 upstream docker-web {
    server web;
      }