diff --git a/utils/backup_app.sh b/utils/backup_app.sh
new file mode 100755
index 0000000000000000000000000000000000000000..5f489fc54646d41a4c184136d73f4e6f02976236
--- /dev/null
+++ b/utils/backup_app.sh
@@ -0,0 +1,170 @@
+#!/bin/bash
+
+#=== Informations ================================================================#
+#- Goal: backup App (Piwigo, prestashop, nextcloud) database and data files
+#- Author: B. Mauclaire - bm@ekimia.fr - 2019/11/11
+#- Author: M. Memeteau - mm@ekimia.fr - 2020/01/01
+#- Licence: GNU Affero General Public License v3.0
+#- Note: vm archive's name will be built with the app's name.
+#- Warning: sshpass package has to be installed.
+
+#-- File where host user's password is stored during script is runnung:
+PSWDFILE=".nopasswd"
+
+
+#=== Functions ===================================================================#
+
+#--- Print script's help/usage:
+function print_help () 
+{
+   echo "Usage: ./backup_app.sh APP_NAME DB_NAME DB_USER DB_PASSWORD HOST_USER_PSWD [HOST_PORT] [HOST_NAME HOST_USER] [DB_ENGINE(mysql/mariadb/pgsql)]"
+   exit 1
+}
+
+
+#--- Main program tasks:
+function main_proc () 
+{
+   echo ""
+   echo "***** Backup $APP_NAME application *****"
+
+   #-- Manage some variable used by the script:
+   declare -a APP_DIRS
+   echo "$HOST_USER_PSWD" > $PSWDFILE
+   SSHNOPASS="sshpass -p `cat $PSWDFILE` ssh -p $HOST_PORT ${HOST_USER}@$HOST_NAME"
+   
+   #-- Backup:
+   #testsshnopass
+   set_host_user_dir
+   set_app_directories
+   backup_db
+   backup_app_data
+   download_archives
+
+   #-- Remove file whith stored password:
+   rm -f ./$PSWDFILE
+
+   echo ""
+   echo "***** End of $APP_NAME backup *****"
+}
+
+
+#--- Command for testing not asking ssh connexion password:
+function testsshnopass ()
+{
+   
+   sshpass -p `cat $PSWDFILE` ssh -p $HOST_PORT ${HOST_USER}@$HOST_NAME "ls"
+   sudo apt install sshpass -y
+}
+
+
+#--- Set applications' directories to backup:
+function set_app_directories () 
+{
+   case $APP_NAME in
+      piwigo)
+         #-- i=photos/_data/i ; upload=photos/upload
+         APP_DIR="/var/www/photos" ;
+         APP_DIRS=( "_data/i" "upload" "local/config" ) ;
+      ;;
+      prestashop)
+         # See for 1.7 https://devdocs.prestashop.com/1.7/development/architecture/
+         APP_DIR="/var/www/" ;
+         APP_DIRS=( "shop" ) ; 
+      ;;
+      nextcloud)
+        APP_DIR="/var/www/nextcloud" ;
+         APP_DIRS=( "apps" "custom_apps" "config" "data" ) ;
+      ;;
+   esac
+}
+
+
+#--- Set remote user's home directory:
+function set_host_user_dir ()
+{
+   if [ "$HOST_USER" == "root" ] ; then
+      HOST_USER_DIR="/${HOST_USER}"
+   else
+      HOST_USER_DIR="/home/${HOST_USER}"
+   fi
+}
+
+
+#--- Application's files backup:
+function backup_app_data () 
+{
+   echo ""
+   echo "*** Build archives ${APP_NAME}*.tgz on remote host $HOST_NAME... ***"
+
+   for APP_DIRI in ${APP_DIRS[*]} ; do
+      DIRI_NAME=`echo "$APP_DIRI" | sed -s 's/\//\_/g'`
+      echo "Build archive of directory: $APP_DIRI"
+      $SSHNOPASS "cd ${APP_DIR} ; tar czf ${HOST_USER_DIR}/${APP_NAME}_${DIRI_NAME}.tgz $APP_DIRI"
+   done
+
+   echo "*** Archives built! ***"
+}
+
+
+#--- Download archives files built on remote app server:
+function download_archives () 
+{
+   #-- Download application's data archive:
+   echo ""
+   echo "*** Start downloading data archives (be patient)... ***"
+   sshpass -p `cat $PSWDFILE` scp -P $HOST_PORT ${HOST_USER}@$HOST_NAME:${HOST_USER_DIR}/${APP_NAME}*.tgz .
+   #TODO : test if transfer was OK
+   #$SSHNOPASS "rm -f ${HOST_USER_DIR}/${APP_NAME}*.tgz"
+   echo "*** Archives ${APP_NAME}*.tgz downloaded! ***"
+
+   #-- Download application's database dump:
+   #- Database's archive downloaded in backup_db function
+}
+
+
+#--- Database backup:
+function backup_db () 
+{
+   echo ""
+   echo "*** Database backup from $HOST_NAME to local file ${DB_NAME}.sql ***"
+
+   case $DB_ENGINE in
+      "mysql" | "mariadb")
+         $SSHNOPASS "mysqldump '"$DB_NAME"' -u '"$DB_USER"' -p'"${DB_PWD}"'" > ${DB_NAME}.sql
+         ;;
+      "pgsql")
+         #- !! TO TEST !!
+         # $SSHNOPASS "PGPASSWORD='"${DB_PWD}"' pg_dump --format=plain--file --create -U '"$DB_USER"' '"$DB_NAME"'" > ${DB_NAME}.sql
+         $SSHNOPASS "PGPASSWORD='"${DB_PWD}"' pg_dump -F p -U '"$DB_USER"' '"$DB_NAME"'" > ${DB_NAME}.sql
+         # pg_dump postgresql://username:password@127.0.0.1:5432/mydatabase 
+         ;;
+   esac
+   
+   echo "*** Database dump downloaded! ***"
+}
+
+
+
+#=== Main program ===================================================================#
+#--- Manage arguments:
+case $# in
+   5) APP_NAME="$1" ; DB_NAME="$2" ; DB_USER="$3" ; DB_PWD="$4" ; HOST_USER_PSWD="$5"
+      HOST_NAME='jaguar.ekimia.fr' ; HOST_PORT=622 ; HOST_USER='root' ; DB_ENGINE="mysql"
+      main_proc
+      ;;
+   6) APP_NAME="$1" ; DB_NAME="$2" ; DB_USER="$3" ; DB_PWD="$4" ; HOST_USER_PSWD="$5" ; HOST_PORT="$6"
+      HOST_NAME='jaguar.ekimia.fr' ; 622 ; HOST_USER='root' ; DB_ENGINE="mysql"
+      main_proc
+      ;;
+   8) APP_NAME="$1" ; DB_NAME="$2" ; DB_USER="$3" ; DB_PWD="$4" ; HOST_USER_PSWD="$5" ; HOST_PORT="$6" ; HOST_NAME="$7" ; HOST_USER="$8"
+      DB_ENGINE="mysql"
+      main_proc
+      ;;
+   9) APP_NAME="$1" ; DB_NAME="$2" ; DB_USER="$3" ; DB_PWD="$4" ; HOST_USER_PSWD="$5" ; HOST_PORT="$6" ; HOST_NAME="$7" ; HOST_USER="$8" ; DB_ENGINE="$9"
+      main_proc
+      ;;
+   *) print_help ;
+      ;;
+esac
+#=== End of script ==================================================================#
diff --git a/utils/restore_app.sh b/utils/restore_app.sh
new file mode 100755
index 0000000000000000000000000000000000000000..c76b6d9795db4741446edf2fcb297921d28ad09d
--- /dev/null
+++ b/utils/restore_app.sh
@@ -0,0 +1,156 @@
+#!/bin/bash
+
+
+#=== Informations ===================================================================#
+#- Goal: restore application's database and data files
+#- Author: B. Mauclaire - bm@ekimia.fr - 2019/11/13
+#- Licence: GNU Affero General Public License v3.0
+#- Usage:
+#  * Argument: application's name, database container's ID/NAME, database engine
+#  * The script has to be ran with sudo in order to be able to write in volume's directories.
+#  * Run in the directory containing vm archives + db.env + docker-compose.yml: so docker app directory's name isn't necessary.
+#  * Vm archive's name is built with the application's name, so files' name are generic in this script.
+#  * Data files will be restored in "data" directory as data file archives contain subdirectory.
+
+
+#=== Functions ===================================================================#
+
+#--- Print script's help/usage:
+function print_help () 
+{
+   echo "Usage: sudo ./restore_app.sh APLICATION_NAME(piwigo/prestashop/nextcloud) DATABASE_CONTAINER_ID/NAME [DB_ENGINE(mysql/mariadb/pgsql)]"
+   exit 1
+}
+
+
+#--- Main program tasks:
+function main_proc () 
+{
+   echo ""
+   echo "***** Restore $APP_NAME application data *****"
+
+   #-- Manage some variable used by the script:
+   check_arguments
+   DATA_DIR='data'
+   
+   #-- Restore:
+   db_informations
+   restore_db
+   restore_data
+   update_app_config
+      
+   echo ""
+   echo "***** End of $APP_NAME restore *****"
+}
+
+
+#--- Check APP_NAME argument:
+function check_arguments ()
+{
+   if [ "$APP_NAME" != "piwigo" ] && [ "$APP_NAME" != "prestashop" ] && [ "$APP_NAME" != "nextcloud" ] ; then
+      echo "Application's name must be one of piwigo/prestashop/nextcloud."
+      exit 1
+   fi
+}
+
+
+#--- Filling database variable from db.env:
+function db_informations ()
+{
+   echo "*** Filling database variable from db.env ***"
+   #-- Use db.env and pwg.env to get user + pswd already in variables without regexp:
+   source .env
+   case $DB_ENGINE in
+      "mysql" | "mariadb")
+         #- Fill the following variables: MYSQL_ROOT_PASSWORD, MYSQL_DATABASE, MYSQL_USER, MYSQL_PASSWORD, PUID, PGID, TZ.
+         DB_NAME="$MYSQL_DATABASE"
+         DB_USER="$MYSQL_USER"
+         DB_PWD="$MYSQL_PASSWORD"
+         DB_ROOT_USER="root"
+         DB_ROOT_PWD="$MYSQL_ROOT_PASSWORD"
+         ;;
+      "pgsql")
+         #- // TO TEST //#
+         DB_NAME="$POSTGRES_DB"
+         DB_USER="$POSTGRES_USER"
+         DB_PWD="$POSTGRES_PASSWORD"
+         ;;
+   esac
+}
+
+
+#--- Restore database:
+function restore_db ()
+{
+   echo "*** Database restore from sql dump ***"
+
+   #-- Restore database from sql archive:
+   #- Database container name is 'db' and it's assumed that it is define like that in app's docker-compose.yml file.
+   case $DB_ENGINE in
+      "mysql" | "mariadb")
+         docker-compose exec -T db bash -c "mysql -u '"$DB_ROOT_USER"' --password='"${DB_ROOT_PWD}"' '"$DB_NAME"'" < ${DB_NAME}.sql
+         #docker exec -i $CONT_DB_ID bash -c "mysql -u '"$DB_ROOT_USER"' -p${DB_ROOT_PWD} '"$DB_NAME"'" < ${DB_NAME}.sql
+         #cat ${DB_NAME}.sql | docker exec -i $CONT_DB_ID /usr/bin/mysql '"$DB_NAME"' -u '"$DB_ROOT_USER"' --password='"$DB_ROOT_PWD"'
+         ;;
+      "pgsql")
+         #- // TO TEST //#
+         docker-compose exec -T db bash -c "PGPASSWORD='"$DB_PWD"' psql -U '"$DB_USER"' '"$DB_NAME"'" < ${DB_NAME}.sql
+         #docker exec -i $CONT_DB_ID bash -c "PGPASSWORD='"$DB_PWD"' psql -U '"$DB_USER"' '"$DB_NAME"'" < ${DB_NAME}.sql
+         #cat ${DB_NAME}.sql | docker exec -i $CONT_DB_ID PGPASSWORD='"$DB_PWD"' /usr/bin/psql -U '"$DB_USER"' '"$DB_NAME"'
+         ;;
+   esac
+   
+   echo "*** Database dump restored! ***"
+}
+
+
+#--- Restore data files:
+function restore_data ()
+{
+   echo "*** Restore application data from ${APP_NAME}_*.tgz to container directory ***"
+   echo "** Start uncompressing archive(s) (be patient)... **"
+   cd $APP_DIR
+   for archfile in ../*.tgz ; do
+      echo "Uncompress $archfile..."
+      tar -xzf $archfile
+   done
+   echo "*** Archive(s) *.tgz restored! ***"
+}
+
+
+#--- Update application configuration files with container's setup:
+#-- This function depends on application
+function update_app_config ()
+{
+   case $APP_NAME in
+      "piwigo")
+         #-- Update db_host name to be container's databse's name in docker-compose.yml, assummed 'db'. See docker-compose.yml for "config" volume name:
+         #sed -i -e 's/localhost/db/' "$DATA_DIR/config/database.inc.php"
+         sed -i -e 's/localhost/$CONT_DB_ID/' "$DATA_DIR/local/config/database.inc.php"
+         mv $DATA_DIR/local/config/config.inc.php $DATA_DIR/local/config/config.inc.php.old
+         ;;
+      "prestashop")
+         #-- Todo:
+         #Delete the admin dir if exists
+         #Change db name and mysql root password in config/settings.inc.php
+         ;;
+      "nextcloud")
+         #-- Todo:
+         ;;
+   esac
+}
+
+
+
+#=== Main program ===================================================================#
+#--- Manage arguments:
+case $# in
+   2) APP_NAME="$1" ; CONT_DB_ID="$2" ; DB_ENGINE="mysql"
+      main_proc
+      ;;
+   3) APP_NAME="$1" ; CONT_DB_ID="$2" ; DB_ENGINE="$3"
+      main_proc
+      ;;
+   *) print_help ;;
+esac
+#=== End of script ==================================================================#