args:
        - "-db_host=postgres"
        - "-db_port=5432"
        - "-db_username=postgres"
        - "-db_password=postgres"

args:
        - "-db_host=postgres"
        - "-db_port=5432"
env:
        - name: db_username
          valueFrom:
            secretKeyRef:
              name: db-secret
              key: db-user
        - name: db_password
          valueFrom:
            secretKeyRef:
              name: db-secret
              key: db-pass

env:
- name: MESSAGE
  value: "hello world"
command: ["/bin/echo"]
args: ["$(MESSAGE)"]

args:
        - "-db_host=postgres"
        - "-db_port=5432"
        - "-db_username=$(db_username)"
        - "-db_password=$(db_password)"
env:
        - name: db_username
          valueFrom:
            secretKeyRef:
              name: db-secret
              key: db-user
        - name: db_password
          valueFrom:
            secretKeyRef:
              name: db-secret
              key: db-pass