Some additioanl knowledge...

How to configure a docker image:

• Customized command line arguments -> args: []
• Copy configuration file into docker image
• By parsing enviorment parameter

1) Cloud Native application are usually configurable with enviorment parameter

2) Using entrypoint script to configure/overwirte existing configuration file in docker image

• Using configuration file within Volumes as mount point in Docker

1 Configmap

Configmap provide configuration parameters as plaintext from outside of the container to container image.
There are two ways to injects configuration parameters in a docker instance:

• Mounting configuration file in docker by using volume
• Reading infos from Configmap and add them to enviorment parameters