Python binary not found on Ubuntu

[Tuupertunut]

Python binary not found on Ubuntu

[mariojmdavid]

hi
the point is that other distros such as almalinux 9, python is already link to python3 by default
furthermore we are still supporting udocker in older distros, where we have python(2)

until we drop support for python2, (this will happen in the next major version), we will have to keep the #!/usr/bin/env python

for ubuntu22.04 the solution is either to

apt install python-is-python3

or modify
maincmd.py to have
#!/usr/bin/env python3