Jenkins build file

Jenkinsfile

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+pipeline {
+    agent {
+        kubernetes {
+            defaultContainer 'kaniko'
+            yaml """
+apiVersion: v1
+kind: Pod
+metadata:
+  name: kaniko
+spec:
+  containers:
+  - name: kaniko
+    image: gcr.io/kaniko-project/executor:v1.5.1-debug
+    imagePullPolicy: Always
+    command:
+    - /busybox/cat
+    tty: true
+    volumeMounts:
+      - name: jenkins-docker-cfg
+        mountPath: /kaniko/.docker
+  volumes:
+  - name: jenkins-docker-cfg
+    projected:
+      sources:
+      - secret:
+          name: docker-credentials
+          items:
+            - key: data
+              path: config.json
+"""
+        }
+    }
+    environment {
+        IMAGE_PUSH_DESTINATION="ghcr.io/ruakij/routingtabletowg"
+    }
+    stages {
+        stage('Build with Kaniko') {
+            steps {
+                checkout scm
+                // Define a variable that stores the output of the git describe --tags --long command
+                def gitTag = sh (returnStdout: true, script: 'git describe --tags --long').trim()
+                // Define a variable that stores the output of the git rev-parse HEAD command
+                def commitHash = sh (returnStdout: true, script: 'git rev-parse HEAD').trim()
+                // Define a variable that stores the output of the git rev-parse --abbrev-ref HEAD command
+                def branchName = sh (returnStdout: true, script: 'git rev-parse --abbrev-ref HEAD').trim()
+                // Define a variable that stores the image tag based on the git tag and branch name
+                def imageTag = ''
+                // Check if the git tag exists
+                if (gitTag) {
+                    // Split the git tag by - and .
+                    def parts = gitTag.split(/[-.]/)
+                    // Loop through the parts and append them to the image tag with a comma
+                    for (int i = 0; i < parts.size(); i++) {
+                        imageTag += parts[i]
+                        if (i < parts.size() - 1) {
+                            imageTag += ','
+                        }
+                    }
+                } else {
+                    // Use the commit hash as the image tag
+                    imageTag = commitHash
+                }
+                // Check if the branch name is main or master
+                if (branchName == 'main' || branchName == 'master') {
+                    // Append the latest tag to the image tag with a comma
+                    imageTag += ',latest'
+                }
+                container(name: 'kaniko', shell: '/busybox/sh') {
+                    withEnv(['PATH+EXTRA=/busybox']) {
+                        // Use the image tag variable as part of the image name when you build and push the image with kaniko
+                        sh '''#!/busybox/sh
+                            /kaniko/executor --context `pwd` --destination $IMAGE_PUSH_DESTINATION --force --build-arg=IMAGE_TAG=$imageTag
+                        '''
+                    }
+                }
+            }
+        }
+    }
+}