Update tester images with netcdf

[gassmoeller]

Follow up to #5487
Adress part of #5447.

The deal.II 9.4 tester is done, I am rebuilding 9.5 right now, I will retrigger the tests for this PR tomorrow when that is done.

[tjhei]

Awesome, thank you.

[tjhei]

@gassmoeller I think we need to specify -D NETCDF_DIR=/opt/netcdf-4.7.4/ or set NETCDF_DIR env variable for this to work. What do you think is the better approach?

[gassmoeller]

I am open for either. However, I am confused: If candi installs netcdf, it also adds $NETCDF_DIR environment variable in the enable.sh script, which should enable ASPECT to find it. Is the root problem that enable.sh is not executed when we startup the container? Wouldnt that be the best solution then?

Edit: This would also take care of the extra hoops we have to jump through for astyle and DEAL_II_DIR.

[tjhei]

Is the root problem that enable.sh is not executed when we startup the container? Wouldnt that be the best solution then?

Correct. I don't know if there is an easy way to do this, though. Maybe you know better. What I did in the tjhei/candi images is something like this:
https://github.com/tjhei/candi/blob/0a06374f7b2a61920d9fa0d9ecdf1f3409707e8f/v92/Dockerfile.in#L23-L43

[gassmoeller]

Good point. Let me incorporate the variable into the image. Rebuilding right now.

[gassmoeller]

See #5495.