What is the image for?

The intended purpose of this image is for it to be used as a Jenkins agent. By using the installed features the user is able to create Jenkins pipelines that can trigger Terraform scripts and test them using Terratest. Additionally, the aws-iam-authenticator tool allows users to test Terraform in AWS. An example of using this image as a Jenkins agent via Kubernetes can be seen below.

First, an example of configuring the pod template in yaml to create the agent.

jenkins:
  clouds:
    - kubernetes:
        name: "kubernetes"
        templates:
          - name: "image-builder-terratest"
            label: "image-builder-terratest"
            nodeUsageMode: NORMAL
            containers:
              - name: "image-terratest"
                image: "ghcr.io/liatrio/image-builder-terratest:${builder_images_version}"

And then specifying the agent in the Jenkinsfile for an example step.

stage('Build') {
  agent {
    label "image-builder-terratest"
  }
  steps {
    container('image-terratest') {
      sh "aws-iam-authenticator help"
      sh "terraform plan"
      sh "go test -v -run TestTerraformAwsHelloWorldExample"
    }
  }
}

What is installed on this image?

• Version 1.2.X of infrastructure as code tool Terraform
• Version 1.21.X of command-line tool aws-iam-authenticator
• Version 1.25.X of kubectl, a command-line tool that allows you to run commands against Kubernetes clusters
• Packages included in Alpine 3.15