🚀(paas) add PaaS deployment scripts, tested on Scalingo

add PaaS deployment scripts, tested on Scalingo

bin/buildpack_start.sh

@@ -0,0 +1,15 @@
+#!/bin/bash
+
+# Start the Django backend server
+gunicorn -b 0.0.0.0:8000 meet.wsgi:application --log-file - &
+
+# Start the Nginx server
+bin/run &
+
+# if the current shell is killed, also terminate all its children     
+trap "pkill SIGTERM -P $$" SIGTERM
+
+# wait for a single child to finish,
+wait -n
+# then kill all the other tasks
+pkill -P $$