"Conditionals must have a boolean result" error for docker driver with recent ansible versions

[MaxBidlingmaier]

With recent ansible versions conditionals must have a boolean value. The playbooks of the docker driver in this plugin have this issue when using

when: (lookup('env', 'HOME'))
in

• src/molecule_plugins/docker/playbooks/create.yml
• src/molecule_plugins/docker/playbooks/destroy.yml

can be fixed by changing to
when: (lookup('env', 'HOME')) != ''

[ClausHolbechArista]

when: (lookup('env', 'HOME')) is truthy is probably more robust.