Kustomize

webserver:
  image:
    repository: my-registry/my-webserver-image
    tag: "1.2.3"
scheduler:
  image:
    repository: my-registry/my-scheduler-image
    tag: "4.5.6"

---

apiVersion: kustomize.config.k8s.io/v1beta1
kind: Kustomization

resources:
- ../airflow-helm-chart/charts/airflow

namespace: airflow

configMapGenerator:
- name: airflow-values
  files:
  - values.yaml

patches:
- patch: |-
    apiVersion: apps/v1
    kind: Deployment
    metadata:
      name: airflow-webserver
    spec:
      template:
        spec:
          containers:
          - name: airflow-webserver
            env:
            - name: LOAD_EXAMPLES
              value: "yes"
            image: $(DOCKER_REGISTRY)/my-registry/my-webserver-image:$(WEB_IMAGE_TAG)
  target:
    kind: Deployment
    name: airflow-webserver
- patch: |-
    apiVersion: apps/v1
    kind: Deployment
    metadata:
      name: airflow-scheduler
    spec:
      template:
        spec:
          containers:
          - name: airflow-scheduler
            image: $(DOCKER_REGISTRY)/my-registry/my-scheduler-image:$(SCHEDULER_IMAGE_TAG)
  target:
    kind: Deployment
    name: airflow-scheduler

images:
- name: my-registry/my-webserver-image
  newTag: 1.2.3
- name: my-registry/my-scheduler-image
  newTag: 4.5.6