adding docker part and isolated muon example

[EnginEren]

BEGINRELEASENOTES

• Adding docker image for k4SimDelphes
• Case study example: Invariant mass of isolated muons

ENDRELEASENOTES

[vvolkl]

Thanks! You could save some bytes in the docker image by removing the build folders after installing - they don't need to be distributed in the image, right?

[EnginEren]

Good point! Let me try

[EnginEren]

Done. I have saved like 300MB.

[vvolkl]

I think the notebook would benefit from a plain text description what it is doing and the plots from some axis labels. In general plain markdown files are nicer to use with version control and can be converted to notebooks with tools like jupytext, see what we are doing here: https://github.com/key4hep/k4MarlinWrapper/blob/master/doc/starterkit/k4MarlinWrapperCLIC/Readme.md
but I'd also merge the .ipynb if it is a bit more verbose.

Just out of curiosity: Why use unpacked.cern.ch when k4simdelphes is regularly installed to /cvmfs/sw.hsf.org/? Isn't it easier to just mount cvmfs in a plain centos7 docker image?

[EnginEren]

Hi Valentin,

Sounds good to me. I have converted it.

Regarding unpacked.cern.ch, it gives us the flexibility to use custom or official docker images with singularity. The main idea is to avoid using

singularity shell docker://ilcsoft/k4simdelphes:latest 

as this will pull the image and unpack it in your working directory. This takes like 30min. Of course, it's fast after caching. More information is here

[EnginEren]

Hi @vvolkl and @tmadlener
what's currently blocking the merge? I'm happy to implement if you have other wishes/suggestion?

[tmadlener]

Hi @EnginEren,

sorry for the delay. I have a few minor comments about some details.