post_install() {
    getent group mxisd > /dev/null 2>&1 || groupadd -r mxisd
    getent passwd mxisd > /dev/null 2>&1 || useradd -r -c 'Federated Matrix Identity Server Daemon' -g mxisd -s /usr/bin/nologin mxisd
    passwd -l mxisd > /dev/null
}

post_upgrade() {
    post_install
}