Running docker-compose as a systemd service

README.md

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:

# 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

Here's a suggestion, for the timer to be accurate:

"Timer units with at least one OnCalendar= directive acquire a pair of additional After= dependencies on time-set.target and time-sync.target, in order to avoid being started before the system clock has been correctly set. See systemd.special(7) for details on these two targets."

https://www.freedesktop.org/software/systemd/man/latest/systemd.timer.html