[Book] [OK!] GitOps Cookbook: 06. Cloud Native CI/CD: Tekton: 6.5 Containerize an Application Using a Tekton Task and Buildah

$ cat << 'EOF' | kubectl create -f -
apiVersion: v1
kind: ServiceAccount
metadata:
  name: tekton-registry-sa
secrets:
  - name: container-registry-secret
EOF

$ cat << 'EOF' | kubectl create -f -
apiVersion: tekton.dev/v1beta1
kind: Task
metadata:
  name: build-push-app
spec:
  workspaces:
    - name: source
      description: The git repo will be cloned onto the volume backing this work space
  params:
    - name: contextDir
      description: the context dir within source
      default: quarkus
    - name: tlsVerify
      description: tls verify
      type: string
      default: "false"
    - name: url
      default: https://github.com/gitops-cookbook/tekton-tutorial-greeter.git
    - name: revision
      default: master
    - name: subdirectory
      default: ""
    - name: sslVerify
      description: defines if http.sslVerify should be set to true or false in the global git config
      type: string
      default: "false"
    - name: storageDriver
      type: string
      description: Storage driver
      default: vfs
    - name: destinationImage
      description: the fully qualified image name
      default: ""
  steps:
    - image: 'gcr.io/tekton-releases/github.com/tektoncd/pipeline/cmd/git-init:v0.21.0'
      name: clone
      resources: {}
      script: |
          CHECKOUT_DIR="$(workspaces.source.path)/$(params.subdirectory)"
          cleandir() {
          # Delete any existing contents of the repo directory if it exists.
          #
          # We don't just "rm -rf $CHECKOUT_DIR" because $CHECKOUT_DIR might be "/"
          # or the root of a mounted volume.
          if [[ -d "$CHECKOUT_DIR" ]] ; then
          # Delete non-hidden files and directories
          rm -rf "$CHECKOUT_DIR"/*
          # Delete files and directories starting with . but excluding ..
          rm -rf "$CHECKOUT_DIR"/.[!.]*
          # Delete files and directories starting with .. plus any other character
          rm -rf "$CHECKOUT_DIR"/..?*
          fi
          }
          /ko-app/git-init \
          -url "$(params.url)" \
          -revision "$(params.revision)" \
          -path "$CHECKOUT_DIR" \
          -sslVerify="$(params.sslVerify)"
          cd "$CHECKOUT_DIR"
          RESULT_SHA="$(git rev-parse HEAD)"
    - name: build-sources
      image: gcr.io/cloud-builders/mvn
      command:
        - mvn
      args:
        - -DskipTests
        - clean
        - install
      env:
        - name: user.home
          value: /home/tekton
      workingDir: "/workspace/source/$(params.contextDir)"
    - name: build-and-push-image
      image: quay.io/buildah/stable
      script: |
          #!/usr/bin/env bash
          buildah --storage-driver=$STORAGE_DRIVER bud --layers -t $DESTINATION_IMAGE $CONTEXT_DIR
          buildah --storage-driver=$STORAGE_DRIVER push $DESTINATION_IMAGE docker://$DESTINATION_IMAGE
      env:
        - name: DESTINATION_IMAGE
          value: "$(params.destinationImage)"
        - name: CONTEXT_DIR
          value: "/workspace/source/$(params.contextDir)"
        - name: STORAGE_DRIVER
          value: "$(params.storageDriver)"
      workingDir: "/workspace/source/$(params.contextDir)"
      volumeMounts:
        - name: varlibc
          mountPath: /var/lib/containers
  volumes:
    - name: varlibc
      emptyDir: {}
EOF