Initial Commit

Dockerfile

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+FROM nginx:latest

README.md

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 # Utility-Image-Builder
 
-A template repo for maintaining base Docker images in my private registry.
+A template repo for maintaining base Docker images in my private registry.
+
+> NOTE: The steps below are not for this repo, but for those using it as a template.
+
+## Bootstrapping
+> If needed, steps starting with `[sudo]` require elevated permissions.
+
+> Go through the entire process before committing to the main branch.
+
+1. Create a new repository by clicking the "Use this template" button on the template repo page.
+1. Configure the new repo settings. At the bottom, select `Template Items` -> `Git Content`.
+1. Create the new repo.
+1. Pull new repo to local PC.
+1. [sudo] Give the setup script permission to execute:
+    ```bash
+    chmod +x template/setup.sh
+    ```
+1. [sudo] Run the start script and fill in the prompts:
+    ```bash
+    ./template/setup.sh
+    ```
+1. Change the Dockerfile as desired. NOTE: Committing before doing this will still build an image...
+1. Populate the `config.json`. This is to make it easy to do version management
+1. Commit to main. If you are committing to an organization linked to the Jenkins server the image will automatically be build for
+the architecture you specified.
+
+> Note that the bootstrapped repo has to be in a organization where the Jenkins user has visibility, and the organization must be configured and linked to the Jenkins server.

config.conf

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+destinationRegistry=192.168.195.195:30000
+imageName=nginx
+imageTag=latest

template/Jenkinsfile

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+#!groovy
+
+pipeline {
+	agent {
+        kubernetes {
+            defaultContainer 'jnlp'
+            yaml """
+apiVersion: v1
+kind: Pod
+metadata:
+  name: {{k3sApp}}-image-build
+spec:
+  serviceAccountName: jenkins-admin
+  nodeSelector:
+    kubernetes.io/arch: {{k3sArch}}
+  containers:
+  - name: kaniko
+    image: gcr.io/kaniko-project/executor:debug
+    command: ["tail"]
+    args: ["-f", "/dev/null"]
+    volumeMounts:
+    - name: kaniko-secret
+      mountPath: /kaniko/.docker
+  restartPolicy: Never
+  volumes:
+  - name: kaniko-secret
+    secret:
+      secretName: dockercred
+      items:
+        - key: .dockerconfigjson
+          path: config.json
+            """
+        }
+    }
+    stages {
+        stage('Docker Build and Push') {
+            steps {
+                container("kaniko") {
+                    sh 'destinationRegistry=`sed -n \'s/^destinationRegistry=\(.*\)/\1/p\' < config.conf`'
+                    sh 'imageName=`sed -n \'s/^imageName=\(.*\)/\1/p\' < config.conf`'
+                    sh 'imageTag=`sed -n \'s/^imageTag=\(.*\)/\1/p\' < config.conf`'
+                    sh '/kaniko/executor --dockerfile `pwd`/Dockerfile --context `pwd` --destination ${destinationRegistry}/${imageName}:${imageTag}'
+                }
+            }
+        }
+  }
+}

template/setup.sh

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+#!/bin/bash
+
+echo "Hello, lets get your project set up. Please follow the prompts attentively."
+
+echo ""
+read -p "    K3S Build Pod Name: " k3sApp
+read -p "    Build Architecture: [amd64 | arm64] " k3sArch
+
+echo ""
+echo "Creating Folders"
+    echo "    Creating cicd/"
+    mkdir cicd
+
+echo ""
+echo "Loading files"
+echo "    Loading cicd/Jenkinsfile"
+cp template/Jenkinsfile cicd/Jenkinsfile
+sed -ie "s|{{k3sApp}}|$k3sApp|g" cicd/Jenkinsfile
+sed -ie "s|{{k3sArch}}|$k3sArch|g" cicd/Jenkinsfile
+rm cicd/Jenkinsfilee
+
+echo ""
+echo "Removing template folder"
+# rm -rf template
+
+echo ""
+echo "Thank you! Happy building..."