Running docker-compose as a systemd service

Docker Compose Systemd

# Running docker-compose as a systemd service

## Files

| File | Purpose |
| ---- | ---- |
| `/etc/compose/docker-compose.yml` | Compose file describing what to deploy |
| `/etc/systemd/system/docker-compose.service` | Service unit to start and manage docker compose |
| `/etc/systemd/system/docker-compose-reload.service` | Executing unit to trigger reload on `docker-compose.service` |
| `/etc/systemd/system/docker-compose-reload.timer` | Timer unit to plan the reloads |

## Installation

Put the above mentioned files in the corresponding places and let systemd load them:

```bash
# systemctl daemon-reload
# systemctl enable docker-compose docker-compose-reload
# systemctl start docker-compose docker-compose-reload
```

docker-compose-reload.service

[Unit]
Description=Refresh images and update containers

[Service]
Type=oneshot

ExecStart=/bin/systemctl reload docker-compose.service

docker-compose-reload.timer

[Unit]
Description=Refresh images and update containers
Requires=docker-compose.service
After=docker-compose.service

[Timer]
OnCalendar=*:0/15

[Install]
WantedBy=timers.target

docker-compose.service

[Unit]
Description=Docker Compose container starter
After=docker.service network-online.target
Requires=docker.service network-online.target

[Service]
WorkingDirectory=/etc/compose
Type=oneshot
RemainAfterExit=yes

ExecStartPre=/usr/local/bin/docker-compose pull --quiet --parallel
ExecStart=/usr/local/bin/docker-compose up -d

ExecStop=/usr/local/bin/docker-compose down

ExecReload=/usr/local/bin/docker-compose pull --quiet --parallel
ExecReload=/usr/local/bin/docker-compose up -d

[Install]
WantedBy=multi-user.target