You just created a Calculate container (release=#-cl_builder_container_release-#, arch=#-cl_builder_container_arch-#, variant=#-cl_builder_container_variant-#)

To enable sshd, run: rc-update add sshd

For security reason, container images ship without user accounts
and without a root password.

Use lxc-attach or chroot directly into the rootfs to set a root password
or create user accounts.