Build Docker image on Kubernetes using GitLab
Categories:
GitLab: c2platform/examples/kubernetes/gitlab-docker-build
This project demonstrates how we can build and release Docker image registry.gitlab.com/c2platform/examples/kubernetes/gitlab-docker-build
on MicroK8s
Kubernetes cluster running on c2d-ks1
using GitLab Runner running in the cluster. In this project the GitLab Runner is installed in the namespace nja
where the nj
“helloworld” application is running.
Overview
![](/images/plantuml/en/docs/gitlab/c2platform/examples/kubernetes/gitlab-docker-build/_index/crc-remote.png)
Create Kubernetes cluster
Create local Kubernetes cluster on c2d-ks
.
- How-to Kubernetes
- How-to Kubernetes Dashboard ( optional but recommended)
Install GitLab Runner
In this project Shared Runners are of course turned off. The stages / jobs defined in .gitlab-ci.yml in this project will be delegated to Kubernetes running locally which we can do by installing a GitLab Runner inside the cluster.
Run pipeline
Navigate to gitlab-docker-build pipelines and select Run pipeline to run the pipeline and create and release a Docker image.
The following jobs are defined:
- Build: Builds the Docker image for the application
- Prepare: Prepares the environment for the pipeline
- Create release: Creates a release for the application (manual)
- Push latest: Pushes the Docker image with the latest tag to the registry
- Push tag: Pushes the Docker image with the tag name to the registry
- deploy: Deploys the application to production (manual)
- Test: Runs automated tests on the application
- sast: Runs security tests on the application
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