Editing One Quick Way To Host A WebApp (section)

=== Systemd ===

With docker/podman, you can just set them to restart or whatever whenever you like and things will stay perpetually running, but I like a single system for all my apps, whether docker or not, and so I use systemd to manage them. An example systemd file looks like this for a docker app:

<syntaxhighlight lang="ini">
[Unit]
Description=App Container
After=network.target

[Service]
Type=simple
User=ubuntu
ExecStart=/usr/bin/podman run --name sub_roshangeorge_dev --mount type=bind,source=/mnt/r2/files,target=/var/www/files -e ENV="var" -p 127.0.0.1:8080:80 sub.roshangeorge.dev:latest
ExecStop=/usr/bin/podman stop sub_roshangeorge_dev
ExecStopPost=/usr/bin/podman rm sub_roshangeorge_dev
Restart=always

[Install]
WantedBy=multi-user.target
</syntaxhighlight>

But you could just as well have a simple non-docker version (this one is a mail server not a web-app but the idea applies)

<syntaxhighlight lang="ini">
[Unit]
Description=Superheap RSS Service
After=network.target

[Service]
Type=simple
User=ubuntu
ExecStart=/home/ubuntu/superheap/target/release/superheap serve -c /home/ubuntu/rss/superheap.json
Restart=always
RestartSec=5
WorkingDirectory=/home/ubuntu

[Install]
WantedBy=multi-user.target
</syntaxhighlight>

While you'll want to symlink these into either `/etc/systemd/system/sub.roshangeorge.dev.service` or `~/.config/systemd/user/sub.roshangeorge.dev.service` if you want to keep them entirely home directory constrained, you can just leave the service unit file in your repo and have it symlinked in. Because your entire repo is on the host, you can just embed all of the host configs in your repo and then appropriately symlink them.