Add Systemd Service on the Digital App Platform

Hi, we are using Symfony app and it is deployed to the App Platform. One of the components that we are using is the Symfony Messenger. This component acts like a async worker on the background where it runs long running queries. One of the options to keep the worker running on the background is to use the systemd. Messenger: Sync & Queued Message Handling (Symfony Docs)

“Systemd user service configuration files typically live in a ~/.config/systemd/user directory. For example, you can create a new messenger-worker.service file. Or a messenger-worker@.service file if you want more instances running at the same time:”

[Unit]
Description=Symfony messenger-consume %i

[Service]
ExecStart=php /path/to/your/app/bin/console messenger:consume async --time-limit=3600
Restart=always
RestartSec=30

[Install]
WantedBy=default.target

I tried this using the App Platform console but unfortunately, I don’t have permission to do so and if I remember correctly, the next deployment resets everything back to default.

My question is, how can we create a systemd on the Digital App Platform?