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Besides checking the source code quality, we should also verify if the commit into Git was done by someone/something we trust. It is a good practice to sign all commits to Git. You need to prepare your Git account and create trusted certificates.

Finally, after pulling and checking the code, we are going to create the image. During this process the image will be signed and uploaded to the public registry Quay.io.

In this step we will install Advanced Cluster Security (ACS) and create 2 new steps in our Pipeline to scan the image for vulnerabilities and security policy. A custom security policy, configured in ACS, will verify if the image is signed.

A software bill of materials (SBOM) offers an insight into the makeup of an application developed using third-party commercial tools and open-source software. It is a machine-readable, formally structured list of all components. This list is important to gain visibility into what risks might exist in a package and their potential impact. It allows to prioritize the risks and define a remediation path. The teams can use the SBOM to monitor all components that are used across an application.

We will create a Task that will generate a SBOM and uploads it into an SBOM repository.

With the finalization of the build process and the security checks during this phase, it is now time to update the Kubernetes manifests and provide the new tag for the created image. I have forked (and cleaned up) another repository that will store all yaml specifications that are required for OpenShift. You can find this repository at: Kubernetes Manifests

At this point we have checked our source code, verified that it has been signed and has no vulnerabilities, generated a SBOM and updated the Kubernetes manifests, that are responsible to deploy our application on OpenShift. As everything with OpenShift these Kubernetes objects are simple yaml files. In this step we will perform a linting on these files, to verify if they follow certain rules and best practices.

If you read all articles up to here (congratulations) you know that we always update the README file of "The Application". But what is this application exactly and how can we update it like in a real-life example? The Globex UI application is built with Angular and was prepared for this journey. It is a quite complex application and requires Kafka to be installed as well. However, since I am not a developer and this tool was already available, I forked and re-used it. The original can be found at Globex UI

After the Pipeline prepared the new image for DEV it should be checked against ACS for policy compliance. This ensures that the deployment manifest adheres to policy requirements. The command line tool roxctl will be leveraged to perform this task.