[Bug] Alpine docker: error in scripts/test_grass_session.py

[neteler]

Describe the bug

(Originally posted by @mmacata in #4809 (comment) and still valid)

The image builds with a success message, even though there are some errors in the logs:

[...]
#27 22.85 (108/110) Purging libzmq (4.3.5-r2)
#27 22.85 (109/110) Purging libsodium (1.0.20-r0)
#27 22.85 (110/110) Purging lmdb (0.9.33-r0)
#27 22.85 Executing busybox-1.37.0-r12.trigger
#27 22.86 OK: 833 MiB in 213 packages
#27 22.98 Traceback (most recent call last):
#27 22.98   File "/scripts/test_grass_session.py", line 9, in <module>
#27 22.98     gs.create_project(project, epsg="25832")
#27 22.98   File "/usr/local/grass/etc/python/grass/script/core.py", line 1817, in create_project
#27 22.98     ps = pipe_command(
#27 22.98          ^^^^^^^^^^^^^
#27 22.98   File "/usr/local/grass/etc/python/grass/script/core.py", line 516, in pipe_command
#27 22.98     return start_command(*args, **kwargs)
#27 22.98            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
#27 22.98   File "/usr/local/grass/etc/python/grass/script/core.py", line 437, in start_command
#27 22.98     return Popen(args, **popts)
#27 22.98            ^^^^^^^^^^^^^^^^^^^^
#27 22.98   File "/usr/local/grass/etc/python/grass/script/core.py", line 84, in __init__
#27 22.98     subprocess.Popen.__init__(self, args, **kwargs)
#27 22.98   File "/usr/lib/python3.12/subprocess.py", line 1028, in __init__
#27 22.99     self._execute_child(args, executable, preexec_fn, close_fds,
#27 22.99   File "/usr/lib/python3.12/subprocess.py", line 1963, in _execute_child
#27 22.99     raise child_exception_type(errno_num, err_msg, err_filename)
#27 22.99 FileNotFoundError: [Errno 2] No such file or directory: 'g.proj'
#27 23.27 n=853535.430000 s=848899.700000 e=638982.550000 w=635619.850000 b=406.590000 t=586.380000
[...]

See: log

Local test without docker

Also this fails:

cd docker/testdata/
cp simple.laz /tmp/
python test_grass_session.py
Traceback (most recent call last):
  File "/home/mneteler/software/grass_main/docker/testdata/test_grass_session.py", line 5, in <module>
    import grass.script as gs
ModuleNotFoundError: No module named 'grass'