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Issue with Pip after migrating from .Net 6 to .Net 7 docker image

Aneesha 10 Reputation points
2024-12-18T02:02:42.07+00:00

I am migrating an application from .NET 6 to .NET 8. I want to update my docker file with latest SDK version. After migrating it to SDK 8.0, I am getting error with pip command
This was in .NET 6 Dockerfile

FROM mcr.microsoft.com/dotnet/sdk:6.0

RUN apt-get update && apt-get install -y \
    && apt-get install -y sudo \
	python3-pip \
 && rm -rf /var/lib/apt/lists/*  
 RUN pip install awscli

After upgrade to .NET 8, its looks like this

FROM mcr.microsoft.com/dotnet/sdk:8.0

RUN apt-get update && apt-get install -y \
    && apt-get install -y sudo \
	python3-pip \
 && rm -rf /var/lib/apt/lists/*  
 RUN pip install awscli

But I am getting below error

1.622 error: externally-managed-environment

1.622

1.622 × This environment is externally managed

1.622 ╰─> To install Python packages system-wide, try apt install

1.622 python3-xyz, where xyz is the package you are trying to

1.622 install.

1.622

1.622 If you wish to install a non-Debian-packaged Python package,

1.622 create a virtual environment using python3 -m venv path/to/venv.

1.622 Then use path/to/venv/bin/python and path/to/venv/bin/pip. Make

1.622 sure you have python3-full installed.

1.622

1.622 If you wish to install a non-Debian packaged Python application,

1.622 it may be easiest to use pipx install xyz, which will manage a

1.622 virtual environment for you. Make sure you have pipx installed.

1.622

1.622 See /usr/share/doc/python3.11/README.venv for more information.

1.622

1.622 note: If you believe this is a mistake, please contact your Python installation or OS distribution provider. You can override this, at the risk of breaking your Python installation or OS, by passing --break-system-packages.

1.622 hint: See PEP 668 for the detailed specification.

failed to solve: process "/bin/sh -c pip install awscli" did not complete successfully: exit code: 1

I saw same kind of error here - https://github.com/dotnet/dotnet-docker/discussions/4949Could someone able to help me on this one?

Developer technologies | ASP.NET | ASP.NET Core
Developer technologies | .NET | Other
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  1. Raymond Huynh (WICLOUD CORPORATION) 620 Reputation points Microsoft External Staff
    2025-07-17T07:24:45.1433333+00:00

    Hello Aneesha,

    When you upgrade your Docker image from .NET 6 to .NET 7 or 8, you might run into an error with pip saying the environment is “externally managed.” This happens because the newer images are based on updated Debian/Ubuntu versions, which don’t allow you to install Python packages globally with pip anymore.

    The best solution is to install the full Python suite and use a virtual environment for your Python packages. This keeps your system clean and avoids the error.

    Here’s what you should add to your Dockerfile:

    RUN apt-get update && apt-get install -y python3-full
RUN python3 -m venv /opt/venv
ENV PATH="/opt/venv/bin:$PATH"
RUN pip install --upgrade pip
RUN pip install awscli
    • The first line installs Python and all the tools you need.
    • The second line creates a virtual environment at /opt/venv.
    • The third line makes sure your shell uses the virtual environment by default.
    • The last two lines upgrade pip and install your Python packages inside the virtual environment.

    Hope this helps!

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