Add pipx to the renovate docker image

[ocofaigh]

Tell us more.

With python restricting use of pip in 3.14 to virtual envs, we are migrating to use pipx instead. Would be great if we could add pipx to the renovate image. I'll gladly contribute a PR if someone can link me to the Dockerfile.
The recommended way to install is using apt, so hence looking to add it directly to the Dockerfile. You can install it using pip, however if you are running on python 3.14, you can't install it globally, so hence looking to install with apt.

[jamietanna]

This sounds reasonable to me, as we already have a number of tools installed (to simplify running in various places)

@viceice would this be:

• a change to install-tool (in containerbase/base/) to add support for install-tool pipx
• a release of containerbase
• bumping that version in https://github.com/renovatebot/base-image/
• bumping that version in https://github.com/renovatebot/renovate/blob/main/tools/docker/Dockerfile

?

[viceice]

yes, but it can't be installed with apt. but it should be easy doable with our pip toolkit

[viceice]

you can already try install-pip pipx