Generalized hostname

docker-compose.yml

       - "80:80"
       - "443:443"
     environment:
-      - NGINX_DOMAIN=${DOMAIN_SUB:-lab}.${DOMAIN_ROOT:-bigbluebutton.org}
+      - NGINX_HOSTNAME=${HOST_NAME:-sl}.${DOMAIN_SUB:-lab}.${DOMAIN_ROOT:-bigbluebutton.org}
     depends_on:
       - scalelite.api
-    command: /bin/bash -c "envsubst '$$NGINX_DOMAIN' < /etc/nginx/sites-available/sites.template > /etc/nginx/sites-enabled/sites.conf && exec nginx -g 'daemon off;'"
+    command: /bin/bash -c "envsubst '$$NGINX_HOSTNAME' < /etc/nginx/sites-available/sites.template > /etc/nginx/sites-enabled/sites.conf && exec nginx -g 'daemon off;'"
 
   redis:
     image: redis
     env_file: ./scalelite/.env
     environment:
       - REDIS_URL=redis://redis:6379
-      - URL_HOST=sl.${DOMAIN_SUB:-lab}.${DOMAIN_ROOT:-bigbluebutton.org}
+      - URL_HOST=${HOST_NAME:-sl}.${DOMAIN_SUB:-lab}.${DOMAIN_ROOT:-bigbluebutton.org}
 
   scalelite.poller:
     entrypoint: [bin/start-poller]
     env_file: ./scalelite/.env
     environment:
       - REDIS_URL=redis://redis:6379
-      - URL_HOST=sl.${DOMAIN_SUB:-lab}.${DOMAIN_ROOT:-bigbluebutton.org}
+      - URL_HOST=${HOST_NAME:-sl}.${DOMAIN_SUB:-lab}.${DOMAIN_ROOT:-bigbluebutton.org}
       - INTERVAL=60

dotenv

 DOMAIN_ROOT=bigbluebutton.org
 DOMAIN_SUB=lab
+HOST_NAME=sl

nginx/sites.template

-#### For <sl.$NGINX_DOMAIN>
+#### For <$NGINX_HOSTNAME>
 
 upstream docker-scalelite {
     server scalelite.api:3000;
 }
 
 server {
-    server_name sl.$NGINX_DOMAIN;
+    server_name $NGINX_HOSTNAME;
 
     listen 80;
     listen [::]:80;
     listen 443 ssl;
     listen [::]:443;
 
-    ssl_certificate /etc/letsencrypt/live/sl.$NGINX_DOMAIN/fullchain.pem;
-    ssl_certificate_key /etc/letsencrypt/live/sl.$NGINX_DOMAIN/privkey.pem;
+    ssl_certificate /etc/letsencrypt/live/$NGINX_HOSTNAME/fullchain.pem;
+    ssl_certificate_key /etc/letsencrypt/live/$NGINX_HOSTNAME/privkey.pem;
 
     location / {
             proxy_pass  http://docker-scalelite;

scalelite/.env

 SECRET_KEY_BASE=secret_key_base
 LOADBALANCER_SECRET=8cd8ef52e8e101574e400365b55e11a6
+HOST_NAME=sl

scalelite/bin/start

   bundle exec rake servers:add["https://test-install.blindsidenetworks.com/bigbluebutton/api","8cd8ef52e8e101574e400365b55e11a6"]
   bundle exec rake servers
   bundle exec rake status
+  echo ">>> Server must be enabled from the console"
 else
   echo ">>> Do nothing"
 fi