Hi all, as discussed during cafe (and several people were interested in this) I would like to get some feedback from esp. non-offline expert about the apptainer solution. Apptainer should allow to use offline in an easy way which would especially be interesting for students but also offline users (not developers) in general. If this works in an easy way this might have implications in the future, eg there could be no need for having a standalone ADST independent of Offline anymore. You will need an installation of apptainer (https://urldefense.com/v3/__https://apptainer.org/__;!!D9dNQwwGXtA!Q5qSlX... ) and then can download the offline container here https://urldefense.com/v3/__https://www.auger.unam.mx/containers/__;!!D9d... or use the one in /opt/expSoftware/Auger/centOS7/offline/offline-v4r0p1.sif. Some questions that I would have: * Is it easy to setup for you? * Can you run a StandardApplication, eg. the RdObserver_AERA? * Can you open the ADST in an EventBrowser? * Can you perform a simple analysis, like plotting an energy histrogram from the ADST? We are unfortunately lacking good documentation so far. So it would be great if we can collect important information. There are some information in a talk from last March meeting https://urldefense.com/v3/__https://indico.nucleares.unam.mx/event/2025/s... mostly in the backup, a wiki page https://urldefense.com/v3/__https://www.auger.unam.mx/AugerWiki/OfflineCo... , and an email exchange attached (which might be confusing due to mentioning cvmfs). Felix said he used it already, so he is probably the expert right now. I also want to test this in the next days. If you run into issues while testing this please communicate them. That's you we will be able to write good instructions. Thanks a lot and good luck :) -- Marvin Gottowik Galician Institute of High Energy Physics (IGFAE) Email: marvin.gottowik(a)usc.es Web: https://igfae.usc.es/