iaroki
To run Docker container on system start-up with systemd we need to create unit file.
For example /etc/systemd/system/docker-nginx.service:
[Unit]
Description=nginx (Docker)
# start this unit only after docker has started
After=docker.service
Requires=docker.service
[Service]
TimeoutStartSec=0
Restart=always
# The following lines start with '-' because they are allowed to fail without
# causing startup to fail.
#
# Kill the old instance, if it's still running for some reason
ExecStartPre=-/usr/bin/docker kill nginx
# Remove the old instance, if it stuck around
ExecStartPre=-/usr/bin/docker rm nginx
# Pull the latest version of the container; NOTE you should be careful to
# pull a tagged version, that way you won't accidentially pull a major-version
# upgrade and break your service!
ExecStartPre=-/usr/bin/docker pull "nginx:1.13"
# Start the actual service; note we remove the instance after it exits
ExecStart=/usr/bin/docker run --rm --name nginx -p 80:80 -p 443:443 -v /etc/service-configs/nginx/nginx.conf:/etc/nginx/nginx.conf:ro -v /var/www/letsencrypt:/var/www/letsencrypt:z -v /etc/letsencrypt:/etc/letsencrypt:ro nginx:1.13
# On exit, stop the container
ExecStop=/usr/bin/docker stop nginx
[Install]
WantedBy=multi-user.target
Then you must make it executable (chmod +x <unit_file>) and then do a systemd reload:
systemctl daemon-reload
systemctl start <unit_file>
# if everything works as expected, enable it
systemctl enable <unit_file>
Source for this info was found here