libpam-mklocaluser 0.18 (amd64 binary) in ubuntu groovy

 When the user logs in for the first time, a local POSIX user account is
 created in /etc/passwd and primary group created in /etc/group, and a
 local home directory is created in /home.
 .
 This is useful on roaming computers when the password is set up to be
 cached by for example libpam-ccreds or sssd to allow login without
 network connectivity using the password provided by a network
 authentication service like Kerberos or LDAP.
 .
 Other than the caching mechanisms of libpam-ccreds or libpam-sssd /
 libnss-sssd, the libpam-mklocaluser approach makes the LDAP accounts
 more persistent on the roaming workstation and robust again credentials
 cache deletions and such.
 .
 The pam_mklocaluser PAM module additionally allows for execution of
 additional hook scripts when users log in to such a roaming computer for
 the first time.