oci-poc-setup: specify shell for chroot

Alexandros Afentoulisrequested to merge
(removed):debian/queens into debian/queens

If no shell is specified chroot will try using user's shell. In case user has a shell not available within the deboostrapped live image, eg. zsh, the oci-poc-setup execution will fail like this:

  • chroot /tmp/build-debimg.4YsJMZ chroot: failed to run command '/usr/bin/zsh': No such file or directory

  • cleanup

  • error=127

  • [ ! -d /tmp/build-debimg.4YsJMZ ]

  • [ 127 -gt 0 ]

  • echo

  • echo Error 127 Error 127

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