Hi all,

I've been trying to improve GRHayL's CI, and while trying to build the Einstein Toolkit's master thornlist in a container image, I got the following error:
```
#11 1164.3 ../../../tools/silock/silock.c: In function ‘updateProgress’:
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#11 1164.3 ../../../tools/silock/silock.c:183:20: error: storage size of ‘timeZone’ isn’t known
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#11 1164.3   183 |    struct timezone timeZone;
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#11 1164.3       |                    ^~~~~~~~
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#11 1164.3 make[7]: *** [Makefile:540: silock.o] Error 1
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#11 1164.3 make[6]: *** [Makefile:486: all-recursive] Error 1
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#11 1164.3 make[5]: *** [Makefile:545: all-recursive] Error 1
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#11 1164.3 make[4]: *** [Makefile:477: all] Error 2
29711
#11 1164.3 make[3]: *** No rule to make target '/opt/et-build/et-gcc/configs/sim/scratch/done/Silo', needed by 'silo.cxx.o'.  Stop.
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#11 1164.3 make[2]: *** [/opt/et-build/et-gcc/lib/make/make.thornlib:113: make.checked] Error 2
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#11 1164.3 make[1]: *** [/opt/et-build/et-gcc/lib/make/make.configuration:179: /opt/et-build/et-gcc/configs/sim/lib/libthorn_Silo.a] Error 2
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#11 1164.3 make[1]: *** Waiting for unfinished jobs....

```

It appears that `struct timezone` is legacy C. Has anyone encountered this before and/or know how to deal with it? I've been using the latest gcc on Ubuntu 24.04, for completeness.

Thanks!

Leo