Merge container logic into start.sh

This whole container thinking is over-engineered and we will get to
it if and when we need to.

setup/start/systemd/crashnotifier@.service

@@ -0,0 +1,15 @@
+# http://northernlightlabs.se/systemd.status.mail.on.unit.failure
+[Unit]
+Description=Cloudron Crash Notifier for %i
+# otherwise, systemd will kill this unit immediately as nobody requires it
+StopWhenUnneeded=false
+
+[Service]
+Type=idle
+WorkingDirectory=/home/yellowtent/box
+ExecStart="/home/yellowtent/box/crashnotifierservice.js" %I
+Environment="HOME=/home/yellowtent" "USER=yellowtent" "DEBUG=box*,connect-lastmile" "BOX_ENV=cloudron" "NODE_ENV=production"
+KillMode=process
+User=yellowtent
+Group=yellowtent
+MemoryLimit=50M