Update Kustomization

An CI image for updating image tags using kustomize.

Environment variables:

• SSH_KEY: Base64-encoded private ssh key of MANIFEST_USER
• MANIFEST_HOST: Manifest git server host
• MANIFEST_USER: Manifest git user name
• MANIFEST_USER_EMAIL: Manifest git user email
• MANIFEST_REPO: Manifest git repository
• MANIFEST_BRANCH: Manifest repository branch
• IMAGES: Updated images (comma-separated list)
• IMAGE_TAG: Image tag generated in current build
• KUSTOMIZATION: Kustomization path relative to the project root

Drone Usage Example

kind: pipeline
name: publish-mysvc1
steps:
- name: publish
  image: plugins/docker
  settings:
    context: mysvc1
    dockerfile: mysvc1/Dockerfile
    username:
      from_secret: docker_username
    password:
      from_secret: docker_password
    registry: harbor.mycompany.com
    repo: harbor.mycompany.com/myuser/mysvc1
    tags:
    - ${DRONE_COMMIT_BRANCH}-${DRONE_COMMIT_SHA:0:7}
    - latest
  when:
    event: push

---
kind: pipeline
name: publish-mysvc2
steps:
- name: publish
  image: plugins/docker
  settings:
    context: mysvc2
    dockerfile: mysvc2/Dockerfile
    username:
      from_secret: docker_username
    password:
      from_secret: docker_password
    registry: harbor.mycompany.com
    repo: harbor.mycompany.com/myuser/mysvc2
    tags:
    - ${DRONE_COMMIT_BRANCH}-${DRONE_COMMIT_SHA:0:7}
    - latest
  when:
    event: push
    
---
kind: pipeline
name: update-kustomization
steps:
- name: kustomization
  pull: if-not-exists
  image: minghsu0107/update-kustomization
  environment:
    SSH_KEY:
      from_secret: ssh_key
    MANIFEST_HOST: git.mycompany.com
    MANIFEST_USER: myuser
    MANIFEST_USER_EMAIL: myuser@mycompany.com
    MANIFEST_REPO: myapp-manifests
    MANIFEST_BRANCH: main
    IMAGES: harbor.mycompany.com/myuser/mysvc1,harbor.mycompany.com/myuser/mysvc2
    IMAGE_TAG: ${DRONE_COMMIT_BRANCH}-${DRONE_COMMIT_SHA:0:7}
    KUSTOMIZATION: overlays/production
  when:
    event: push
depends_on:
 - publish-mysvc1
 - publish-mysvc2

In the above example, the image tag is in the form of ${DRONE_COMMIT_BRANCH}-${DRONE_COMMIT_SHA:0:7}, where DRONE_COMMIT_BRANCH and DRONE_COMMIT_SHA are environment variables provided by Drone at run time.