Question: where can I find the list of installed tools

[DocMoebiuz]

For the official github runner images there is a page where they list all installed packages and tools: https://github.com/actions/runner-images/blob/main/images/ubuntu/Ubuntu2004-Readme.md

I was assuming that the tools would also be available for this container image version but I find that i.e. AZ CLI is missing.

Looks like the Github team has a json file which is considered for installing those tools: https://github.com/actions/runner-images/blob/main/images/ubuntu/toolsets/toolset-2004.json

How did you go about these packages and tools? It looks like some of the packages are found in the Dockerfile.base