template_fields not working in the decorator task.docker  #29585

Apache Airflow Provider(s)

docker

Versions of Apache Airflow Providers

apache-airflow-providers-docker 3.4.0

Apache Airflow version

2.5.1

Operating System

Linux

Deployment

Docker-Compose

Deployment details

No response

What happened

The templated fields are not working under task.docker

@task.docker(image="python:3.9-slim-bullseye", container_name='python_{{macros.datetime.now() | ts_nodash}}', multiple_outputs=True)
def transform(order_data_dict: dict):
    """
    #### Transform task
    A simple Transform task which takes in the collection of order data and
    computes the total order value.
    """
    total_order_value = 0

    for value in order_data_dict.values():
        total_order_value += value

    return {"total_order_value": total_order_value}

Will throws error with un-templated container_name

Bad Request ("Invalid container name (python_{macros.datetime.now() | ts_nodash}), only [a-zA-Z0-9][a-zA-Z0-9_.-] are allowed")

What you think should happen instead

All these fields should work with docker operator:

https://airflow.apache.org/docs/apache-airflow-providers-docker/stable/_api/airflow/providers/docker/operators/docker/index.html

template_fields: Sequence[str]= ('image', 'command', 'environment', 'env_file', 'container_name')

How to reproduce

with the example above

Anything else

No response

Are you willing to submit PR?

• Yes I am willing to submit a PR!

Code of Conduct

• I agree to follow this project's Code of Conduct