I want to use debian:bullseye as a base image and then install a specific Python version - i.e. 3.11.1. At the moment I am just learning docker and linux.

From what I understand I can either:

1. Download and compile sources
2. Install binaries (using apt-get)
3. Use a Python base image

I have come across countless questions on here and articles online. Do I use deadsnakes? What version do I need? Are there any official python distributions (who is deadsnakes anyway)?

But ultimately I want to know the best means of getting Python on there. I don't want to use a Python base image - I am curious in the steps involved. Compile sources - I am far from having that level of knowhow - and one for another day.

Currently I am rolling with the following:

FROM debian:bullseye

RUN apt update && apt upgrade -y
RUN apt install software-properties-common -y
RUN add-apt-repository "ppa:deadsnakes/ppa"
RUN apt install python3.11

This fails with:

#8 1.546 E: Unable to locate package python3.11
#8 1.546 E: Couldn't find any package by glob 'python3.11'

Ultimately - it's not the error - its just finding a good way of getting a specific Python version on my container.

CodePudding user response：

In case you want to install Python 3.11 in debian bullseye you have to compile it from source following the next steps (inside the Dockerfile):

sudo apt update
sudo apt install software-properties-common wget
wget https://www.python.org/ftp/python/3.11.1/Python-3.11.1.tar.xz
sudo tar -xf Python-3.11.1.tar.xz
cd Python-3.11.1
sudo ./configure --enable-optimizations
sudo make altinstall

Another option (easiest) would be to use the official Python Docker image, in your case:

FROM 3.11-bullseye

You have all the versions available in docker hub.

Other option that could be interesting in your case is 3.11-slim-bullseye, that is an image that does not contain the common packages contained in the default tag and only contains the minimal packages needed to run python.

CodePudding user response：

Based on @tomasborella answer, to do this in docker:

Dockerfile

FROM debian:bullseye

RUN apt-get update -y \
    && apt-get upgrade -y \
    && apt-get -y install build-essential \
        zlib1g-dev \
        libncurses5-dev \
        libgdbm-dev \ 
        libnss3-dev \
        libssl-dev \
        libreadline-dev \
        libffi-dev \
        libsqlite3-dev \
        libbz2-dev \
        wget \
    && export DEBIAN_FRONTEND=noninteractive \
    && apt-get purge -y imagemagick imagemagick-6-common 

RUN cd /usr/src \
    && wget https://www.python.org/ftp/python/3.11.0/Python-3.11.0.tgz \
    && tar -xzf Python-3.11.0.tgz \
    && cd Python-3.11.0 \
    && ./configure --enable-optimizations \
    && make altinstall

RUN update-alternatives --install /usr/bin/python python /usr/local/bin/python3.11 1

update-alternatives - will update the links to allow you to run python as opposed to specifying python3.11 when you want to run it.

It takes a while to compile those sources!