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Hi there. I am trying to use docker storage with a custom Dockerfile that is based on an image that contains a conda environment.

I am having an issue with the health checks failing, but the flow itself runs. Can you tell if I am doing something wrong? More details in thread.

The docker file:

```ARG IMAGE_TAG=latest
FROM &lt;my_registry_url&gt;/vscode:${IMAGE_TAG}

# Install additional OS packages.
RUN apt-get update &amp;&amp; export DEBIAN_FRONTEND=noninteractive \
    &amp;&amp; apt-get -y install --no-install-recommends dos2unix

RUN mkdir /opt/ml
SHELL ["conda", "run", "-n", "standard_ml_20201110_py37", "/bin/bash", "-c"]
RUN pip install prefect==0.14.19 # "PyJWT&lt;2.0.0"

ENTRYPOINT ["conda", "run", "-n", "standard_ml_20201110_py37"]```
The flow:

```from dotenv import find_dotenv, load_dotenv
from prefect import Flow, task
from prefect.storage import Docker

load_dotenv(find_dotenv())


@task
def gen_data():
    return [1, 2, 3, 4]


@task
def print_data(data):
    print(data)


docker_storage = Docker(    
    dockerfile="flows/packaged_docker/Dockerfile",
    image_name="prefect-poc",
    image_tag="latest",
    python_dependencies=["sh"],
    ignore_healthchecks=True,
)

with Flow("Packaged-Docker-POC", storage=docker_storage) as flow:
    data = gen_data()
    print_data(data)


if __name__ == "__main__":
    flow.visualize(filename="packaged-docker")
    flow.register(project_name="FMINT", labels=["docker"])```
The health check error I get:

```Step 14/15 : COPY ./tmpujuroceb/healthcheck.py /opt/prefect/healthcheck.py
 ---&gt; 20ea31f8c64a
Step 15/15 : RUN python /opt/prefect/healthcheck.py '["/opt/prefect/flows/packaged-docker-poc.prefect"]' '(3, 7)'
 ---&gt; Running in a694633ca6a6
ERROR conda.cli.main_run:execute(33): Subprocess for 'conda run ['/bin/bash', '-c', 'python /opt/prefect/healthcheck.py \'["/opt/prefect/flows/packaged-docker-poc.prefect"]\' \'(3, 7)\'']' command failed.  (See above for error)

/opt/conda/envs/standard_ml_20201110_py37/.tmpi23u0y9t: line 3: syntax error near unexpected token `('
/opt/conda/envs/standard_ml_20201110_py37/.tmpi23u0y9t: line 3: `/bin/bash -c 'python /opt/prefect/healthcheck.py '["/opt/prefect/flows/packaged-docker-poc.prefect"]' '(3, 7)'''```
Thanks!

Hey <@U012CK03GBA> -- this looks like a consequence of nested commands since you're overriding the `SHELL` in your Dockerfile

I'm honestly not sure of the best way to make this healthcheck command syntactically correct while nested like this, I would just ignore the healthcheck