Add Go demo with isolated CI and manual production release

config/dev/supervisor.ini

@@ -0,0 +1,12 @@
+[program:demo]
+directory=/dm/service/project/demo/src
+command=/usr/local/go/bin/go run .
+environment=PORT="18080"
+autostart=true
+autorestart=unexpected
+stopasgroup=true
+killasgroup=true
+redirect_stderr=true
+stdout_logfile=/work/log/demo.log
+stdout_logfile_maxbytes=10MB
+stdout_logfile_backups=3