How do I install a Gitlab runner as a Docker container on my Synology NAS?
Step 1: Find Docker image
I click on the “Registration” tab in the Synology Docker window and search for Gitlab. I select the Docker image “gitlab/gitlab-runner” and then select the tag “bleeding”.
Step 2: Put image/image into operation:
Hosts problem
My synology-gitlab-insterlation always identifies itself by hostname only. Since I took the original synology-gitlab-package from the package-center, this behavior cannot be changed afterwards. As a workaround I can include a custom hosts file. Here you can see that the hostname “peter” belongs to the Nas IP address 192.168.12.42.
127.0.0.1 localhost
::1 localhost ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
192.168.12.42 peter
This file is simply placed on the Synology NAS.
Step 3: Set up GitLab Runner
I click on my Runner image:
I enable the “Enable automatic restart” setting:
After that I click on “Advanced Settings” and select the “Volume” tab:
I click Add File and include my hosts file via the path “/etc/hosts”. This step is only necessary if the hostnames cannot be resolved.
I accept the settings and click next
Now I find the initialized image under Container:
I select the container (gitlab-gitlab-runner2 for me) and click on “Details”. Then I click on the “Terminal” tab and create a new bash session. Here I enter the command “gitlab-runner register”. For registering I need information that I find in my GitLab installation at http://gitlab-adresse:port/admin/runners.
If you still need more packages, then you can install them via “apt-get update” followed by “apt-get install python …”.
After that I can include the runner in my projects and use it:
