raphaelauv edited a comment on issue #17268:
URL: https://github.com/apache/airflow/issues/17268#issuecomment-887784405
for docker 2.1.0rc2 it's all good
docker in docker work and also the XCOM
--------
```
t3 = DockerOperator(
api_version='auto',
docker_url="unix://var/run/docker.sock",
command='/bin/echo toto',
image='centos:latest',
network_mode='bridge',
mount_tmp_dir=False,
do_xcom_push=True,
task_id='docker_op_tester',
dag=dag,
)
```
give
```
[2021-07-27 19:38:44,647] {docker.py:246} INFO - Starting docker container
from image centos:latest
[2021-07-27 19:38:44,682] {docker.py:256} WARNING - Using remote engine or
docker-in-docker and mounting temporary volume from host is not supported.
Falling back to `mount_tmp_dir=False` mode. You can set `mount_tmp_dir`
parameter to False to disable mounting and remove the warning
[2021-07-27 19:38:46,975] {docker.py:307} INFO - toto
[2021-07-27 19:38:47,664] {taskinstance.py:1204} INFO - Marking task as
SUCCESS. dag_id=docker_sample, task_id=docker_op_tester,
execution_date=20210727T150000, start_date=20210727T193839,
end_date=20210727T193847
[2021-07-27 19:38:47,770] {taskinstance.py:1265} INFO - 0 downstream tasks
scheduled from follow-on schedule check
[2021-07-27 19:38:47,815] {local_task_job.py:149} INFO - Task exited with
return code 0
```
and
```
t3 = DockerOperator(
api_version='auto',
docker_url="unix://var/run/docker.sock",
command='/bin/echo toto',
image='centos:latest',
network_mode='bridge',
mount_tmp_dir=False,
do_xcom_push=True,
task_id='docker_op_tester',
dag=dag,
)
```
give
```
[2021-07-27 19:39:27,176] {docker.py:246} INFO - Starting docker container
from image centos:latest
[2021-07-27 19:39:28,091] {docker.py:307} INFO - toto
[2021-07-27 19:39:28,383] {taskinstance.py:1204} INFO - Marking task as
SUCCESS. dag_id=docker_sample, task_id=docker_op_tester,
execution_date=20210727T180000, start_date=20210727T193926,
end_date=20210727T193928
[2021-07-27 19:39:28,424] {taskinstance.py:1265} INFO - 0 downstream tasks
scheduled from follow-on schedule check
[2021-07-27 19:39:28,464] {local_task_job.py:149} INFO - Task exited with
return code 0
```
and in all case a XCOM
key : return_value
value : toto
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