Need to access schedule time in DockerOperator in Airflow

Question

Need to access schedule time in airflow's docker operator. For example

t1 = DockerOperator(
task_id="task",
dag=dag,
image="test-runner:1.0",
docker_url="xxx.xxx.xxx.xxx:2376",
environment={"FROM": "{{(execution_date + macros.timedelta(hours=6,minutes=(30))).isoformat()}}"})

Basically, I need to populate schedule time as docker environment.

Answer 1

First macros only works if it is a template_fields. Second, you need to check which version of airflow you are using, if you are using 1.9 or below, it is likely it won't work for DockerOperator which @tobi6 mentioned in the comment, since template_fields only included command (https://github.com/apache/incubator-airflow/blob/v1-9-stable/airflow/operators/docker_operator.py#L91)
However, 1.10 stable add environment there for DockerOperator. https://github.com/apache/incubator-airflow/blob/v1-10-stable/airflow/operators/docker_operator.py#L103