NGINX swarm redeploy timeouts

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I am not sure if i got the RFC right, but this pretty much seems like a dns cacheing issue:

Try to modify you server.conf like this.

server {
       ...
        # set DNS resolver as Docker internal DNS
        resolver 127.0.0.11 valid=10s;
        resolver_timeout 5s; 
       ...
       location / {
        # prevent dns caching and force nginx to make a dns lookup on each request.
        set $target http://web:8080;
        proxy_pass $target;
       ..
       }
}

The first part declares to use the swarm networks dns server with a short cache validation time.
The second part uses a indirect proxy_pass to prevent caching for the proxy_pass target at all.

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