set default /etc/hostname?

[Negashev]

How i can set defauilt hostname for container

for example?

    if [ ! -z "$HOSTNAME" ]; then
      if [ "$HOSTNAME" = "default" ]; then
            HOSTNAME=`hostname`
            log "Changing Zabbix Hostname to ${bold}${white}${HOSTNAME}${reset}."
            sed -i 's/^[# ]*Hostname=.*$/Hostname='$HOSTNAME'/g' ${TARGET_CONFIG_FILE}
        else
            log "Changing Zabbix Hostname to ${bold}${white}${HOSTNAME}${reset}."
            sed -i 's/^[# ]*Hostname=.*$/Hostname='$HOSTNAME'/g' ${TARGET_CONFIG_FILE}
        fi      
    fi