Docker HowTo Auto Start Containers On Reboot

An explanation for systemd as a process manager can be found at :

https://docs.docker.com/engine/admin/host_integration/

Once you are happy with your docker images and container, you must us systemd to restart them.

1. Go to the directory :

/etc/systemd/system

This directory contains all .service files that are used to start docker containers.

2. Check what docker services are enabled on start up

systemctl list-unit-files | grep docker

This will list out all the services that are enabled.

3a. To create a new service called *docker-[containername].service* :

sudo vi /etc/systemd/system/docker-redcap_5.7.0.service

add the contents :

[Unit]

Description=Redcap 5.7.0 container

Requires=docker.service

After=docker.service

[Service]

Restart=always

ExecStart=/usr/bin/docker run -itd -p 81:80 lcbruit/redcap:v1

ExecStop=/usr/bin/docker stop -t 2 lcbruit/redcap:v1

[Install]

WantedBy=default.target

3b. To amend

Run the following :

systemctl daemon-reload

systemctl start docker-redcap_5.7.0.service

systemctl enable docker-redcap_5.7.0.service