Docker - Kubectl

Kubectl installed in an alpine based image from docker. Used for container building and k8s deployments in CI/CD.

Usage

GitLab CI/CD

deploy:
  image: txn2/docker-kubectl:29.1.3-1.35.0-2
  script:
    - kubectl set image deployment/myapp myapp=myregistry/myapp:${CI_COMMIT_TAG}
      --server="${K8S_SERVER}"
      --token="${K8S_TOKEN}"
      --certificate-authority=ca.crt

Docker

docker run --rm txn2/docker-kubectl:29.1.3-1.35.0-2 kubectl version --client

Versioning

Images are versioned using the format <docker-version>-<kubectl-version>-<revision>. The Makefile automatically uses the latest git tag.

Make Targets

make build   # Build with latest git tag
make test    # Build and verify kubectl works
make tag     # Build and tag as latest
make push    # Build, tag, and push both
make all     # Same as push

Release

git tag 29.1.3-1.35.0-3
make push