Error while deploying flow: FileNotFoundError(2, "No such file or directory: 'ip'")

Description

Using code snippet from https://docs.prefect.io/orchestration/tutorial/docker.html#persisting-your-flow-with-docker-storage

import prefect
from prefect import task, Flow
from prefect.environments.storage import Docker

@task
def hello_task():
    logger = prefect.context.get("logger")
    logger.info("Hello, Docker!")

flow = Flow("hello-docker", tasks=[hello_task])

flow.storage = Docker()

flow.register()

running it in the container ends up building proper image and registering the flow in local server:

...
 ---> 3d851b191d56
Successfully built 3d851b191d56
Successfully tagged hello-docker:2020-04-20t08-03-01-759322-00-00
Flow: http://localhost:8080/flow/5af6b16e-cbd1-44f0-b855-80e3420f4860

Then I start the agent prefect agent start docker (inside the same container or different one, which joined the same docker network and has docker unix socket access via mounted volume).

The error I observe:

root@876bfe616714:~/flows# prefect agent start docker

 ____            __           _        _                    _
|  _ \ _ __ ___ / _| ___  ___| |_     / \   __ _  ___ _ __ | |_
| |_) | '__/ _ \ |_ / _ \/ __| __|   / _ \ / _` |/ _ \ '_ \| __|
|  __/| | |  __/  _|  __/ (__| |_   / ___ \ (_| |  __/ | | | |_
|_|   |_|  \___|_|  \___|\___|\__| /_/   \_\__, |\___|_| |_|\__|
                                           |___/

[2020-04-20 08:09:06,297] INFO - agent | Starting DockerAgent with labels []
[2020-04-20 08:09:06,298] INFO - agent | Agent documentation can be found at https://docs.prefect.io/cloud/
[2020-04-20 08:09:06,299] INFO - agent | Waiting for flow runs...
[2020-04-20 08:09:42,514] INFO - agent | Found 1 flow run(s) to submit for execution.
[2020-04-20 08:09:42,589] INFO - agent | Deploying flow run b86a2022-4e17-49cb-b5d2-266c6adf3593
[2020-04-20 08:09:42,601] ERROR - agent | Logging platform error for flow run b86a2022-4e17-49cb-b5d2-266c6adf3593
[2020-04-20 08:09:42,702] ERROR - agent | Error while deploying flow: FileNotFoundError(2, "No such file or directory: 'ip'")

Expected Behavior

Pick the flow and execute it.

Reproduction

1. Start prefect stack locally (docker compose)
2. Start additional container and join the compose network, e.g. docker run -it --rm -v $(pwd)/flows:/root/flows -v /var/run/docker.sock:/var/run/docker.sock --network "prefect-server" prefecthq/prefect:latest /bin/bash
3. Init the env:

export PREFECT__BACKEND=server
export PREFECT__SERVER__HOST=http://docker.for.mac.host.internal

1. Register the flow (see above)
2. Run agent (see above)

Environment

OSX, Docker Desktop Community 2.2.0.5

[oleksandr]

@joshmeek I will try to reset the environment today, reproduce the issue and share the details here to be able to move forward.

[oleksandr]

@joshmeek looks good to me! I hope it doesn’t shoot back in other weird use-cases, but so far - exactly what would help us! thanks a lot!