Defina o shell=/bin/shell
no seu arquivo /etc/schroot/schroot.conf
:
Referenciando a página do manual schroot.conf :
shell=shell
When running a login shell a number of potential shells will be considered, in this order: the command in the SHELL environment variable (if --preserve-environment is used, or pre‐serve-environment is enabled), the user's shell in the ‘passwd’ database, /bin/bash and finally /bin/sh. This setting overrides this list, and will use the shell specified. It may be overridden using the --shell option.