Issues loading python 3.11 .dll/.so when trying to run a python script from a .NET 6 app hosted in a docker container #2046

Environment

• Pythonnet version: 3.0.1
• Python version: 3.11
• Operating System: Windows/Linux Docker Container
• .NET Runtime: .NET 6.0

Details

• Describe what you were trying to get done.

  I am trying to get a .net 6.0 app to run python scripts when running in a docker container.
  My code works fine running on Windows 10 or Ubuntu on WSL, but once I build it into a container I get an exception when I call PythonEngine.Initialize()

  

  I have triple checked that the python files get put in the right spot in my docker image

  

• What commands did you run to trigger this issue? If you can provide a
  Minimal, Complete, and Verifiable example
  this will help us understand the issue.

  I have set Runtime.PythonDLL to point at the .dll before calling Initialize

  

  This works when I run the program directly on my Windows 10 pc, and through WSL after changing the path to point at the .so file in /usr/lib/python3.11/config-3.11-x86_64-linux-gnu/
  I have tried both linux and windows containers and I get the same exception saying it cant load the dynamic library. I am basically brand new to using Docker so I am assuming I have made some stupid mistake, here is the dockerfile I used for Windows, basically combining some stuff from the .NET 6 example, and python example files

  FROM mcr.microsoft.com/windows:10.0.17763.3650-amd64 as win
  
  RUN powershell.exe -Command $ErrorActionPreference = 'Stop'; \
      [Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12; \
      wget https://www.python.org/ftp/python/3.11.1/python-3.11.1-amd64.exe -OutFile c:\python-3.11.1-amd64.exe ; \
      Start-Process c:\python-3.11.1-amd64.exe -ArgumentList '/quiet PrependPath=1 TargetDir=C:\Python311' -Wait ; \
      Remove-Item c:\python-3.11.1-amd64.exe -Force
  
  FROM mcr.microsoft.com/dotnet/sdk:6.0 as build-env
  WORKDIR /src
  COPY src/*.csproj .
  RUN dotnet restore
  COPY src .
  RUN dotnet publish -c Release -o /publish
  
  FROM mcr.microsoft.com/dotnet/runtime:6.0 as runtime
  WORKDIR /app
  COPY --from=build-env /publish .
  COPY --from=win C:/Python311 C:/Python311
  ENTRYPOINT ["dotnet", "TestPythonNetDocker.dll"]
  

  and for linux. I am not used to working with linux and getting python installed and moved to the image felt harder than it needed to be which means I am probably missing something.

  # syntax=docker/dockerfile:1 
  FROM ubuntu:jammy as ubu
  RUN apt-get update
  RUN apt-get install -y python3.11 libpython3.11
  
  FROM mcr.microsoft.com/dotnet/sdk:6.0 as build-env
  WORKDIR /src
  COPY src/*.csproj .
  RUN dotnet restore
  COPY src .
  RUN dotnet publish -c Release -o /publish
  
  FROM mcr.microsoft.com/dotnet/runtime:6.0 as runtime
  WORKDIR /app
  COPY --from=build-env /publish .
  COPY --from=ubu /usr/lib/python3.11/ /usr/lib/python3.11/
  RUN apt-get update
  ENTRYPOINT ["dotnet", "TestPythonNetDocker.dll"]
  

  I looked around and found some other issues about getting a python program to import .NET stuff in docker containers but didn't see anything about the otherway around.