How can I use environment variables in Nginx.confI have a docker container running Nginx, that links to another docker container. The host name and IP address of the second container is loaded into the Nginx container as environment variables on startup, but is not know before then (it's dynamic). I want my nginx.conf to use these values - e.g. upstream gunicorn { server $APP_HOST_NAME:$APP_HOST_PORT; } How can I get environment variables into t
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