Hi everyone, I’ve tried registering a prefect flow using docker storage and ECS run config today and received a

pip

and

python 2.7

error? (pls see screenshots) The dockerfile I’m using for the docker storage (

flow.storage = Docker(dockerfile="Dockerfile", …)

looks like this

FROM python:3.9
WORKDIR /app
COPY . .
ENV PYTHONPATH=$PYTHONPATH:`pwd`
FROM <http://gcr.io/google-appengine/python|gcr.io/google-appengine/python>
RUN apt-get update
RUN apt-get install poppler-utils -y

I’ve set the python version to 3.9 in the dockerfile, why doesn’t it use that?

Hi @Fina Silva-Santisteban! I believe this is happening because of your second

FROM

statement:

FROM <http://gcr.io/google-appengine/python|gcr.io/google-appengine/python>

this image most likely has python2.7 as the default

Thanks so much @Chris White! Yes that makes sense! We’ve checked the docs and it says exactly that:

# Use -p python3 or -p python3.7 to select python version. Default is version 2.

https://github.com/GoogleCloudPlatform/python-runtime