You can define extra environment variables for the HCCM. Both Kubernetes formats are supported: value and valueFrom. The valueFrom field can reference multiple sources such as ConfigMaps and Secrets, but also supports other options. For more details, see the Kubernetes documentation on ConfigMaps and Secrets.
env:
ROBOT_USER:
value: "<robot-user>"env:
ROBOT_USER:
valueFrom:
secretKeyRef:
name: hcloud
key: robot-user
optional: true