fesom2_test_refactoring: add XIOS 2.5 at /xios for upcoming xios run-test#5
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Mirrors the XIOS layer in fesom2_ci/Dockerfile so the run-test image can compile FESOM with FESOM_WITH_XIOS=ON. The xios/ source tree under this directory is a duplicate of fesom2_ci/xios/ (git pack storage deduplicates blobs by content, so the on-disk repo size grows by working-tree only, ~88 MB). Adds libhdf5-dev, perl, and uuid-dev to apt for the XIOS build deps. Keeps mkfesom + miniconda layout untouched so existing recom/cavities/channel/icebergs workflows continue to work. A new fesom2_xios.yml workflow on FESOM/fesom2 will use this image to drive the small global-mesh XIOS run-test mirroring fesom2_recom.
This was referenced May 3, 2026
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Summary
Adds an XIOS 2.5 install at
/xiosto thefesom2_test_refactoringimage so a forthcomingfesom2_xios.ymlrun-test on FESOM/fesom2 (mirroringfesom2_recom.yml,fesom2_cavities.yml, etc.) can compile FESOM withFESOM_WITH_XIOS=ONand exercise the XIOS-on output path end-to-end on thepimesh.The XIOS layer mirrors what was added to
fesom2_ci/Dockerfilein #3: bundledextern/{boost,blitz}(no--use_extern_*sincebld.cfghardcodes the include paths),arch-GCC_LINUX.envrewritten to point at Ubuntu's serial HDF5/NetCDF, and-std=c++11appended toBASE_CFLAGSso XIOS's lambda-as-template-arg sites compile.mkfesom+ miniconda layout left untouched; existing recom/cavities/channel/icebergs workflows continue to work.