Azure Devops install Python package from Azure Artifacts inside Docker - azure

Question

I am trying to install a pip package from Azure Artifacts as part of a Docker image(with Docker#2 task) but whatever I try does not work.
It looks like my pip inside Docker cannot authenticate against Azure Artifacts whatever I try. Closest I got is with
RUN pip install keyring artifacts-keyring
ENV ARTIFACTS_KEYRING_NONINTERACTIVE_MODE true
RUN pip install <> --index-url https://pkgs.dev.azure.com/<>/_packaging/<>/pypi/simple/
but in my Azure devops, i keep getting
ERROR: Could not find a version that satisfies the requirement <> (from versions: none)
ERROR: No matching distribution found for <>
Also - Azure documentation on this seems to very poor, if I switch ENV ARTIFACTS_KEYRING_NONINTERACTIVE_MODE false it prompts my Azure DevOps pipeline to authenticate intercatively which is not what I want.
How can I install a Python package published in Azure Artifacts as part of my Azure Pipeline Docker task automatically?

Answer 1

How can I install a Python package published in Azure Artifacts as part of my Azure Pipeline Docker task automatically?
We could use the PipAuthenticate task to populates the PIP_EXTRA_INDEX_URL environment variable:
It authenticates with your artifacts feed and per the docs, will store
the location of a config file that can be used to connect in the
PYPIRC_PATH environment variable.
Then pass it in the build arg:
arguments: --build-arg INDEX_URL=$(PIP_EXTRA_INDEX_URL)
You could check this document Consuming Azure Pipelines Python artifact feeds in Docker for some more details.
Hope this helps.

Answer 2

To add to the accepted answer, here is a somewhat more complete code example:
azure-pipelines.yml
- task: PipAuthenticate#1
inputs:
artifactFeeds: 'my_artifacts_feed'
# 'onlyAddExtraIndex' populates PIP_EXTRA_INDEX_URL env variable
onlyAddExtraIndex: True
- task: Docker#2
displayName: 'Build Docker Image'
inputs:
command: build
dockerfile: $(dockerfilePath)
tags: |
$(tag)
arguments: --build-arg INDEX_URL=$(PIP_EXTRA_INDEX_URL)
Dockerfile
FROM python:3.8-buster
# add an URL that PIP automatically searches (e.g., Azure Artifact Store URL)
ARG INDEX_URL
ENV PIP_EXTRA_INDEX_URL=$INDEX_URL
COPY requirements.txt
RUN pip install -r requirements.txt