diff --git a/conf/install_nextcloud.conf.sample b/conf/install_nextcloud.conf.sample
index 8bff92a..c6a0fd3 100644
--- a/conf/install_nextcloud.conf.sample
+++ b/conf/install_nextcloud.conf.sample
@@ -3,6 +3,15 @@
 # ---
 
 
+# - WEBSITE
+# -
+# - URL of cloud service
+# -
+# - No default value
+# -
+#WEBSITE=""
+
+
 # - SRC_BASE_DIR
 # -
 # - Source directory for downloading nextcloud
diff --git a/install_nextcloud.sh b/install_nextcloud.sh
index 902714b..5a9ee54 100755
--- a/install_nextcloud.sh
+++ b/install_nextcloud.sh
@@ -1331,20 +1331,48 @@ else
 
 	# - Add key for ColaboraOnline Repository
    # -
+   _failed=false
 	echo "" >> $log_file
 	echo "# - Add key for ColaboraOnline Repository" >> $log_file
 	echo "# -" >> $log_file
 	echononl "Add key for ColaboraOnline Repository.."
 
-	echo "apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 0C54D189F4BA284D" >> $log_file
-	apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 0C54D189F4BA284D >> $log_file 2>&1
+	#echo "apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 0C54D189F4BA284D" >> $log_file
+	#apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 0C54D189F4BA284D >> $log_file 2>&1
 
-	if [ "$?" = 0 ]; then
-		echo_ok
-	else
-		echo_failed
-		error "For more informations see log output at '$log_file'."
-	fi
+   echo "wget -O /tmp/co-apt.key \\
+   https://www.collaboraoffice.com/repos/CollaboraOnline/CODE-centos7/repodata/repomd.xml.key" >> $log_file
+   wget  -O /tmp/co-apt.key \
+      https://www.collaboraoffice.com/repos/CollaboraOnline/CODE-centos7/repodata/repomd.xml.key >> $log_file 2>&1
+
+   if [[ "$?" -gt 0 ]]; then
+      _failed=true
+      echo_failed
+      error "For more informations see log output at '$log_file'."
+   else
+      echo "" >> $log_file
+      echo "apt-key add /tmp/co-apt.key"  >> $log_file
+      apt-key add /tmp/co-apt.key >> $log_file 2>&1
+      if [[ "$?" -eq 0 ]]; then
+         echo_ok
+      else
+         _failed=true
+         echo_failed
+      fi
+   fi
+
+   if $_failed ; then
+      error "Something went wrong with adding repositoty key..."
+
+      echononl "continue anyway [yes/no]: "
+      read OK
+      OK="$(echo "$OK" | tr '[:upper:]' '[:lower:]')"
+      while [[ "$OK" != "yes" ]] && [[  "$OK" != "no" ]] ; do
+         echononl "Wrong entry! - repeat [yes/no]: "
+         read OK
+      done
+      [[ $OK = "yes" ]] || fatal "Interrupted ny user."
+   fi
 
 
 	# - Add Repository ColaboraOnline
@@ -1385,11 +1413,21 @@ EOF
 	else
 		echo_failed
 		error "For more informations see log output at '$log_file'."
+
+      echononl "continue anyway [yes/no]: "
+      read OK
+      OK="$(echo "$OK" | tr '[:upper:]' '[:lower:]')"
+      while [[ "$OK" != "yes" ]] && [[  "$OK" != "no" ]] ; do
+         echononl "Wrong entry! - repeat [yes/no]: "
+         read OK
+      done
+      [[ $OK = "yes" ]] || fatal "Interrupted ny user."
 	fi
 	
 
 	# - Install ColaboraOnline packages
 	# -
+   _failed=false
 	for _debian_pkg in ${dpkg_pkg_colabora_online[@]} ; do
 
 		echononl "Installing $_debian_pkg .."
@@ -1403,6 +1441,7 @@ EOF
 			if [ "$?" = 0 ]; then
 				echo_ok
 			else
+            _failed=true
 				echo_failed
 				error "For more informations see log output at '$log_file'."
 			fi
@@ -1412,6 +1451,19 @@ EOF
 
 	done
 
+   if $_failed ; then
+      error "Something went wrong with installing debian packages .."
+
+      echononl "continue anyway [yes/no]: "
+      read OK
+      OK="$(echo "$OK" | tr '[:upper:]' '[:lower:]')"
+      while [[ "$OK" != "yes" ]] && [[  "$OK" != "no" ]] ; do
+         echononl "Wrong entry! - repeat [yes/no]: "
+         read OK
+      done
+      [[ $OK = "yes" ]] || fatal "Interrupted ny user."
+   fi
+
    LOOLWDS_USER="$(stat -c "%U" /etc/loolwsd/loolwsd.xml)"
    echo "" >> $log_file
    echo "LOOLWDS_USER=$LOOLWDS_USER" >> $log_file
@@ -1453,6 +1505,15 @@ EOF
    else
       echo_failed
       error "For more informations see log output at '$log_file'."
+
+      echononl "continue anyway [yes/no]: "
+      read OK
+      OK="$(echo "$OK" | tr '[:upper:]' '[:lower:]')"
+      while [[ "$OK" != "yes" ]] && [[  "$OK" != "no" ]] ; do
+         echononl "Wrong entry! - repeat [yes/no]: "
+         read OK
+      done
+      [[ $OK = "yes" ]] || fatal "Interrupted ny user."
    fi
 
    # - Symlimk Snakeoil Cert '/etc/loolwsd/ca-chain.cert.pem' --> '/etc/ssl/certs/ssl-cert-snakeoil.pem'
@@ -1469,6 +1530,15 @@ EOF
    else
       echo_failed
       error "For more informations see log output at '$log_file'."
+
+      echononl "continue anyway [yes/no]: "
+      read OK
+      OK="$(echo "$OK" | tr '[:upper:]' '[:lower:]')"
+      while [[ "$OK" != "yes" ]] && [[  "$OK" != "no" ]] ; do
+         echononl "Wrong entry! - repeat [yes/no]: "
+         read OK
+      done
+      [[ $OK = "yes" ]] || fatal "Interrupted ny user."
    fi
 
    # - Symlimk Snakeoil Cert '/etc/loolwsd/key.pem' --> '/etc/ssl/private/ssl-cert-snakeoil.key'
@@ -1485,6 +1555,15 @@ EOF
    else
       echo_failed
       error "For more informations see log output at '$log_file'."
+
+      echononl "continue anyway [yes/no]: "
+      read OK
+      OK="$(echo "$OK" | tr '[:upper:]' '[:lower:]')"
+      while [[ "$OK" != "yes" ]] && [[  "$OK" != "no" ]] ; do
+         echononl "Wrong entry! - repeat [yes/no]: "
+         read OK
+      done
+      [[ $OK = "yes" ]] || fatal "Interrupted ny user."
    fi
 
    blank_line
@@ -4143,6 +4222,58 @@ else
 fi
 
 
+# - Install and enable nextcloud app 'desk'
+# -
+_app="deck"
+echo "" >> $log_file
+echo "# -" >> $log_file
+echo "# - Install nextcloud app '$_app'" >> $log_file
+echononl "Install nextcloud app '$_app'.."
+
+echo "sudo -u \"$HTTP_USER\" \"$php_binary\" \"${INSTALL_DIR}/occ\" app:install \"$_app\"" >> $log_file
+sudo -u "$HTTP_USER" "$php_binary" "${INSTALL_DIR}/occ" app:install "$_app" >> $log_file 2>&1
+
+if [[ $? -eq 0 ]]; then
+   echo_ok
+else
+   echo_failed
+   error "For more informations see log output at '$log_file'."
+
+   echononl "continue anyway [yes/no]: "
+   read OK
+   OK="$(echo "$OK" | tr '[:upper:]' '[:lower:]')"
+   while [[ "$OK" != "yes" ]] && [[  "$OK" != "no" ]] ; do
+      echononl "Wrong entry! - repeat [yes/no]: "
+      read OK
+   done
+   [[ $OK = "yes" ]] || fatal "Interrupted ny user."
+fi
+
+echo "" >> $log_file
+echo "# -" >> $log_file
+echo "# - Eanable nextcloud app '$_app'" >> $log_file
+echononl "Eanable nextcloud app '$_app'.."
+
+echo "sudo -u \"$HTTP_USER\" \"$php_binary\" \"${INSTALL_DIR}/occ\" app:enable \"$_app\"" >> $log_file
+sudo -u "$HTTP_USER" "$php_binary" "${INSTALL_DIR}/occ" app:enable "$_app" >> $log_file 2>&1
+
+if [[ $? -eq 0 ]]; then
+   echo_ok
+else
+   echo_failed
+   error "For more informations see log output: \"$log_file\"."
+
+   echononl "continue anyway [yes/no]: "
+   read OK
+   OK="$(echo "$OK" | tr '[:upper:]' '[:lower:]')"
+   while [[ "$OK" != "yes" ]] && [[  "$OK" != "no" ]] ; do
+      echononl "Wrong entry! - repeat [yes/no]: "
+      read OK
+   done
+   [[ $OK = "yes" ]] || fatal "Interrupted ny user."
+fi
+
+
 blank_line
 
 if $COLABORA_SERVICE_INSTALLED ; then