nginx.conf.template

user nginx;
worker_processes 1;

error_log /var/log/nginx/error.log warn;
pid /var/run/nginx.pid;

events {
  worker_connections 1024;
}

http {
  include /etc/nginx/mime.types;
  default_type application/octet-stream;

  log_format main '$remote_addr - $remote_user [$time_local] "$request" '
                  '$status $body_bytes_sent "$http_referer" '
                  '"$http_user_agent" "$http_x_forwarded_for"';

  access_log /var/log/nginx/access.log main;

  sendfile on;

  keepalive_timeout 65;

  gzip on;

  server {
    listen 80;
    server_name localhost;

    # Docker's DNS resolver
    resolver 127.0.0.11;

    # Storing the proxied upstream in a variable forces nginx to always resolve it through the resolver
    set $backend_upstream "http://${CAOS_DASHBOARD_TSDB_HOST}:${CAOS_DASHBOARD_TSDB_PORT}";

    location ${CAOS_DASHBOARD_BASE_TSDB_API}/ {
      rewrite ^/${CAOS_DASHBOARD_BASE_NAME}/(.*) /$1 break;
      proxy_pass $backend_upstream;

      proxy_set_header Host $host;
      proxy_set_header X-Real-IP $remote_addr;
      proxy_set_header X-Forwarded-Proto $scheme;
      proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    }

    location /${CAOS_DASHBOARD_BASE_NAME} {
      alias /caos-dashboard/;

      expires -1;
      add_header Pragma "no-cache";
      add_header Cache-Control "no-store, no-cache, must-revalidate, post-check=0, pre-check=0";

      try_files $uri $uri/ index.html =404;
    }
  }
}