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Hi Prefect Experts, am getting *`InterruptedError: denied: access forbidden`* error when trying prefect.Docker | Pushing image to the registry..., Can anyone help me - how to /where to specify the registry username passwords in the code ? or anywhere it matters

```import prefect
from prefect import task, Flow
from prefect.environments.storage import Docker
from prefect.run_configs import KubernetesRun

@task(log_stdout=True)
def log_my_stdout(print_message):
    print("I will log this ",print_message)


with Flow("KubeTestFlow") as f:
    log_my_stdout("Example!")

f.storage = Docker( registry_url="hakko.sekai.dev:5050/sekai-backend/", image_name="k8s-job-flow", image_tag="0.1.0" )

f.run_config = KubernetesRun(labels=["DEV"],job_template_path="/home/ajith/prefect/job_spec.yaml")
out = f.register(project_name="kubeTest")```

```Successfully tagged hakko.sekai.dev:5050/sekai-backend/k8s-job-flow:0.1.0
[2021-02-23 06:35:32+0530] INFO - prefect.Docker | Pushing image to the registry...
Traceback (most recent call last):
  File "kubeTutorial.py", line 20, in &lt;module&gt;
    out = f.register(project_name="kubeTest")
  File "/usr/local/lib/python3.8/dist-packages/prefect/core/flow.py", line 1668, in register
    registered_flow = client.register(
  File "/usr/local/lib/python3.8/dist-packages/prefect/client/client.py", line 783, in register
    serialized_flow = flow.serialize(build=build)  # type: Any
  File "/usr/local/lib/python3.8/dist-packages/prefect/core/flow.py", line 1450, in serialize
    storage = self.storage.build()  # type: Optional[Storage]
  File "/usr/local/lib/python3.8/dist-packages/prefect/storage/docker.py", line 303, in build
    self._build_image(push=push)
  File "/usr/local/lib/python3.8/dist-packages/prefect/storage/docker.py", line 378, in _build_image
    self.push_image(full_name, self.image_tag)
  File "/usr/local/lib/python3.8/dist-packages/prefect/storage/docker.py", line 586, in push_image
    raise InterruptedError(line.get("error"))
InterruptedError: denied: access forbidden```

If you’re using an ECS registry you need to specify your AWS credentials. You can do that in a few different places, e.g. in the Run config or as arguments when you start the prefect agent. I hope this helps!

Thank you <@U01F2A93VB7>, our k8s cluster in on DigitalOcean , Docker registry is on GitLabs , i'll try that out , Any prefect document related to this ? Thank you!

<@U01H6FAP1CN> ah sorry, now I see your code snippets! Im using the <https://docs.prefect.io/api/latest/run_configs.html#ecsrun|ECS run config> and that one has a param `run_task_kwargs` which I use for setting things like cluster name and launchtype, but for that to work I must have set the permissions correctly on aws. I save env variables in my <https://docs.prefect.io/api/latest/storage.html#docker|Docker storage> using the `env_vars` param and then use <https://docs.prefect.io/orchestration/concepts/secrets.html#setting-cloud-secrets|prefect secrets> to make them available. Even though it’s not Kubernetes or gitlab registry setup, I hope this helps!

Thank you <@U01F2A93VB7>, this helps  lot !

Since this happens on _push_ it sounds like a potential issue with your local setup — prefect directly uses your local docker daemon, so ensuring that you can run `docker push` commands from the command line might help you identify where the issue is