{Packaging} Prioritize official package over the dist one

[orgads]

Description
The unofficial package can have a version that is greater than
the official one, and the latest version is installed by default.

Solve by assigning the official repository high priority.

---

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[ghost]

Thank you for your contribution orgads! We will review the pull request and get back to you soon.

[orgads]

I'm not sure if this is considered a "customer facing" change. This fixes a bug in debian testing/sid (Debian stable and ubuntu have older versions, so they're not affected). Should I change it to [] and add a history section?

[yonzhan]

@jiasli for awareness

[jiasli]

I saw python3-azure-cli (2.30.0-2) is distributed at https://packages.debian.org/sid/python3-azure-cli.

I am able to repro:

> docker run -it --rm debian:sid

# apt-get update
# apt-get install curl --yes
# curl -sL https://aka.ms/InstallAzureCLIDeb | bash

# az -v
azure-cli                         2.30.0

core                              2.30.0
telemetry                          1.0.6

Extensions:
azure-devops                      0.22.0

Python location '/usr/bin/python3'
Extensions directory '/root/.azure/cliextensions'
Extensions system directory '/usr/lib/python3/dist-packages/azure-cli-extensions'

# apt-cache policy azure-cli
azure-cli:
  Installed: 2.30.0-2
  Candidate: 2.30.0-2
  Version table:
 *** 2.30.0-2 500
        500 http://deb.debian.org/debian sid/main amd64 Packages
        100 /var/lib/dpkg/status
     2.30.0-1~buster 500
        500 https://packages.microsoft.com/repos/azure-cli buster/main amd64 Packages
        500 https://packages.microsoft.com/repos/azure-cli buster/main all Packages

Notice the system /usr/bin/python3 is used, instead of our bundled /opt/az/bin/python3.

@bluca, I think this is causing problem for Debian sid users as they can't install from Microsoft official repo https://packages.microsoft.com/ by default.

[jiasli]

Reference:

• https://wiki.debian.org/AptConfiguration
• man apt_preferences: https://manpages.debian.org/bullseye/apt/apt_preferences.5.en.html

[jiasli]

Meaning of 1001:

P >= 1000
causes a version to be installed even if this constitutes a downgrade of the package

This makes sure the unofficial ones are removed and replaced by our official one.

[jiasli]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 2 pipeline(s).

[jiasli]

This script currently is not uploaded automatically to https://aka.ms/InstallAzureCLIDeb. I have updated the release pipeline to do that automatically during each release: https://dev.azure.com/azure-sdk/internal/_releaseDefinition?definitionId=78&_a=definition-tasks&environmentId=159