I am using this Dockerfile to deploy to App Engine Flexible environment.
FROM gcr.io/google-appengine/python
RUN apt-get -y update && apt-get -y upgrade
&& apt-get install -y software-properties-common
&& add-apt-repository -y ppa:ubuntugis/ppa
&& add-apt-repository -y ppa:deadsnakes/ppa
&& apt-get -y update && apt-get -y upgrade
&& apt-get -y install python3.8 python3.8-distutils python3.8-venv
gdal-bin libgdal-dev python3-gdal
&& apt-get autoremove -y
&& apt-get autoclean -y
&& apt-get clean
&& rm -rf /var/lib/apt/lists/*
RUN virtualenv /env -p python3.8
ENV VIRTUAL_ENV /env
ENV PATH /env/bin:$PATH
ADD requirements.txt /app/requirements.txt
RUN pip install -r /app/requirements.txt
...
I’ve been using this configuration for at least a year and deploy to GCP regularly. As of this morning, when I try to deploy I’m getting these errors:
Reading package lists...
Reading package lists...
Building dependency tree...
Reading state information...
Calculating upgrade...
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Reading package lists...
Building dependency tree...
Reading state information...
E: Unable to locate package python3.8
E: Couldn't find any package by glob 'python3.8'
E: Couldn't find any package by regex 'python3.8'
E: Unable to locate package python3.8-distutils
E: Couldn't find any package by glob 'python3.8-distutils'
E: Couldn't find any package by regex 'python3.8-distutils'
E: Unable to locate package python3.8-venv
E: Couldn't find any package by glob 'python3.8-venv'
E: Couldn't find any package by regex 'python3.8-venv'
The command '/bin/sh -c apt-get -y update && apt-get -y upgrade
&& apt-get install -y software-properties-common
&& add-apt-repository -y ppa:ubuntugis/ppa
&& add-apt-repository -y ppa:deadsnakes/ppa
&& apt-get -y update
&& apt-get -y upgrade
&& apt-get -y install python3.8 python3.8-distutils python3.8-venv gdal-bin libgdal-dev python3-gdal
&& apt-get autoremove -y
&& apt-get autoclean -y
&& apt-get clean
&& rm -rf /var/lib/apt/lists/*' returned a non-zero code: 100
ERROR
ERROR: build step 0 "gcr.io/cloud-builders/docker" failed: step exited with non-zero status: 100
I’m not sure I want to change my Python version, since some of the packages use Python3.8.
Thanks in advance for any help you can provide.
2
Answers
In my case, I was using Ubuntu 16.04 and deadsnakes was no longer supporting Python3.8. See https://github.com/deadsnakes/issues/issues/195
I changed Docker to use
FROM ubuntu:bionic
and that allowed Docker to install Python3.8.According to Google’s documentation, you also need to add a Dockerfile in the same directory that contains the
app.yaml
file. For building Python containers, Google provides this base image:The Python runtime has Python 2.7.9 and Python 3.7.2 pre-installed. You can customize the Dockerfile to install other versions or alternative interpreters if needed.
You can specify whether to use Python 2 or Python 3 in your application’s Dockerfile when creating the virtual environment:
Here is some more information regarding Python Runtime, App Engine flexible environment, Python 3 Runtime Environment.