diff --git a/conf/app.src b/conf/app.src
index 17489bf..b898c3f 100644
--- a/conf/app.src
+++ b/conf/app.src
@@ -1,7 +1,7 @@
-SOURCE_URL=url of app's source
-SOURCE_SUM=sha256 checksum
+SOURCE_URL=https://download.technitium.com/dns/archive/8.1.4/DnsServerPortable.tar.gz
+SOURCE_SUM=f244e358a8f7ae5891e3b6a86ac8445a3ea515b9f62d7e14225f1ca24f5c50ac
 SOURCE_SUM_PRG=sha256sum
 SOURCE_FORMAT=tar.gz
 SOURCE_IN_SUBDIR=true
-SOURCE_FILENAME=
+#SOURCE_FILENAME=
 SOURCE_EXTRACT=true
diff --git a/conf/systemd.service b/conf/systemd.service
index 7bb448e..ffccea1 100644
--- a/conf/systemd.service
+++ b/conf/systemd.service
@@ -1,5 +1,5 @@
 [Unit]
-Description=Small description of the service
+Description=Technitium DNS Server
 After=network.target
 
 [Service]
@@ -7,14 +7,15 @@ Type=simple
 User=__APP__
 Group=__APP__
 WorkingDirectory=__FINALPATH__/
-ExecStart=__FINALPATH__/script
+ExecStart=/usr/bin/dotnet __FINALPATH__/DnsServerApp.dll
+Restart=always
+# Restart service after 10 seconds if the dotnet service crashes:
+RestartSec=10
+KillSignal=SIGINT
+SyslogIdentifier=dns-server
 StandardOutput=append:/var/log/__APP__/__APP__.log
 StandardError=inherit
 
-# Sandboxing options to harden security
-# Depending on specificities of your service/app, you may need to tweak these
-# .. but this should be a good baseline
-# Details for these options: https://www.freedesktop.org/software/systemd/man/systemd.exec.html
 NoNewPrivileges=yes
 PrivateTmp=yes
 PrivateDevices=yes
@@ -38,8 +39,6 @@ CapabilityBoundingSet=~CAP_LEASE CAP_LINUX_IMMUTABLE CAP_IPC_LOCK
 CapabilityBoundingSet=~CAP_BLOCK_SUSPEND CAP_WAKE_ALARM
 CapabilityBoundingSet=~CAP_SYS_TTY_CONFIG
 CapabilityBoundingSet=~CAP_MAC_ADMIN CAP_MAC_OVERRIDE
-CapabilityBoundingSet=~CAP_NET_ADMIN CAP_NET_BROADCAST CAP_NET_RAW
-CapabilityBoundingSet=~CAP_SYS_ADMIN CAP_SYS_PTRACE CAP_SYSLOG
 
 [Install]
 WantedBy=multi-user.target
diff --git a/manifest.json b/manifest.json
index 9fdc46e..4da04ac 100644
--- a/manifest.json
+++ b/manifest.json
@@ -1,16 +1,16 @@
 {
-    "name": "Example app",
-    "id": "example",
+    "name": "Technitium DNS",
+    "id": "technitium-dns",
     "packaging_format": 1,
     "description": {
-        "en": "Explain in *a few (10~15) words* the purpose of the app or what it actually does (it is meant to give a rough idea to users browsing a catalog of 100+ apps)",
+        "en": "Block ads & malware at DNS level for your entire network! Self host a DNS server for privacy & security",
         "fr": "Expliquez en *quelques* (10~15) mots l'utilité de l'app ou ce qu'elle fait (l'objectif est de donner une idée grossière pour des utilisateurs qui naviguent dans un catalogue de 100+ apps)"
     },
-    "version": "1.0~ynh1",
-    "url": "https://example.com",
+    "version": "8.1.4~ynh1",
+    "url": "https://technitium.com/dns/",
     "upstream": {
         "license": "free",
-        "website": "https://example.com",
+        "website": "https://technitium.com/dns/",
         "demo": "https://demo.example.com",
         "admindoc": "https://yunohost.org/packaging_apps",
         "userdoc": "https://yunohost.org/apps",
@@ -18,17 +18,15 @@
     },
     "license": "free",
     "maintainer": {
-        "name": "John doe",
-        "email": "john.doe@example.com"
+        "name": "Navan Chauhan",
+        "email": "technitiumdns@navan.email"
     },
     "requirements": {
         "yunohost": ">= 4.3.0"
     },
     "multi_instance": true,
     "services": [
-        "nginx",
-        "php7.3-fpm",
-        "mysql"
+        "nginx"
     ],
     "arguments": {
         "install": [
@@ -46,28 +44,6 @@
                 "name": "is_public",
                 "type": "boolean",
                 "default": true
-            },
-            {
-                "name": "language",
-                "type": "string",
-                "ask": {
-                    "en": "Choose the application language",
-                    "fr": "Choisissez la langue de l'application"
-                },
-                "choices": ["fr", "en"],
-                "default": "fr"
-            },
-            {
-                "name": "admin",
-                "type": "user"
-            },
-            {
-                "name": "password",
-                "type": "password",
-                "help": {
-                    "en": "Use the help field to add an information for the admin about this question.",
-                    "fr": "Utilisez le champ aide pour ajouter une information à l'intention de l'administrateur à propos de cette question."
-                }
             }
         ]
     }
diff --git a/scripts/_common.sh b/scripts/_common.sh
index 7e55ac0..944a65e 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -4,9 +4,6 @@
 # COMMON VARIABLES
 #=================================================
 
-# dependencies used by the app
-pkg_dependencies="deb1 deb2 php$YNH_DEFAULT_PHP_VERSION-deb1 php$YNH_DEFAULT_PHP_VERSION-deb2"
-
 #=================================================
 # PERSONAL HELPERS
 #=================================================
diff --git a/scripts/install b/scripts/install
index af6ca03..3962b92 100755
--- a/scripts/install
+++ b/scripts/install
@@ -13,10 +13,6 @@ source /usr/share/yunohost/helpers
 # MANAGE SCRIPT FAILURE
 #=================================================
 
-ynh_clean_setup () {
-	### Remove this function if there's nothing to clean before calling the remove script.
-	true
-}
 # Exit if an error occurs during the execution of the script
 ynh_abort_if_errors
 
@@ -27,38 +23,16 @@ ynh_abort_if_errors
 domain=$YNH_APP_ARG_DOMAIN
 path_url=$YNH_APP_ARG_PATH
 is_public=$YNH_APP_ARG_IS_PUBLIC
-language=$YNH_APP_ARG_LANGUAGE
-admin=$YNH_APP_ARG_ADMIN
-password=$YNH_APP_ARG_PASSWORD
 
-### If it's a multi-instance app, meaning it can be installed several times independently
-### The id of the app as stated in the manifest is available as $YNH_APP_ID
-### The instance number is available as $YNH_APP_INSTANCE_NUMBER (equals "1", "2"...)
-### The app instance name is available as $YNH_APP_INSTANCE_NAME
-###    - the first time the app is installed, YNH_APP_INSTANCE_NAME = ynhexample
-###    - the second time the app is installed, YNH_APP_INSTANCE_NAME = ynhexample__2
-###    - ynhexample__{N} for the subsequent installations, with N=3,4...
-### The app instance name is probably what interests you most, since this is
-### guaranteed to be unique. This is a good unique identifier to define installation path,
-### db names...
 app=$YNH_APP_INSTANCE_NAME
 
 #=================================================
 # CHECK IF THE APP CAN BE INSTALLED WITH THESE ARGS
 #=================================================
-### About --weight and --time
-### ynh_script_progression will show to your final users the progression of each scripts.
-### In order to do that, --weight will represent the relative time of execution compared to the other steps in the script.
-### --time is a packager option, it will show you the execution time since the previous call.
-### This option should be removed before releasing your app.
-### Use the execution time, given by --time, to estimate the weight of a step.
-### A common way to do it is to set a weight equal to the execution time in second +1.
-### The execution time is given for the duration since the previous call. So the weight should be applied to this previous call.
+
 ynh_script_progression --message="Validating installation parameters..." --time --weight=1
 
-### If the app uses NGINX as web server (written in HTML/PHP in most cases), the final path should be "/var/www/$app".
-### If the app provides an internal web server (or uses another application server such as uWSGI), the final path should be "/opt/yunohost/$app"
-final_path=/var/www/$app
+final_path=/opt/yunohost/$app
 test ! -e "$final_path" || ynh_die --message="This path already contains a folder"
 
 # Register (book) web path
@@ -71,8 +45,6 @@ ynh_script_progression --message="Storing installation settings..." --time --wei
 
 ynh_app_setting_set --app=$app --key=domain --value=$domain
 ynh_app_setting_set --app=$app --key=path --value=$path_url
-ynh_app_setting_set --app=$app --key=language --value=$language
-ynh_app_setting_set --app=$app --key=admin --value=$admin
 
 #=================================================
 # STANDARD MODIFICATIONS
@@ -81,19 +53,10 @@ ynh_app_setting_set --app=$app --key=admin --value=$admin
 #=================================================
 ynh_script_progression --message="Finding an available port..." --time --weight=1
 
-### Use these lines if you have to open a port for the application
-### `ynh_find_port` will find the first available port starting from the given port.
-### If you're not using these lines:
-###		- Remove the section "CLOSE A PORT" in the remove script
-
 # Find an available port
-port=$(ynh_find_port --port=8095)
+port=$(ynh_find_port --port=5380)
 ynh_app_setting_set --app=$app --key=port --value=$port
 
-# Optional: Expose this port publicly
-# (N.B.: you only need to do this if the app actually needs to expose the port publicly.
-# If you do this and the app doesn't actually need you are CREATING SECURITY HOLES IN THE SERVER !)
-
 # Open the port
 # ynh_script_progression --message="Configuring firewall..." --time --weight=1
 # ynh_exec_warn_less yunohost firewall allow --no-upnp TCP $port
@@ -103,15 +66,24 @@ ynh_app_setting_set --app=$app --key=port --value=$port
 #=================================================
 ynh_script_progression --message="Installing dependencies..." --time --weight=1
 
-### `ynh_install_app_dependencies` allows you to add any "apt" dependencies to the package.
-### Those deb packages will be installed as dependencies of this package.
-### If you're not using this helper:
-###		- Remove the section "REMOVE DEPENDENCIES" in the remove script
-###		- Remove the variable "pkg_dependencies" in _common.sh
-###		- As well as the section "REINSTALL DEPENDENCIES" in the restore script
-###		- And the section "UPGRADE DEPENDENCIES" in the upgrade script
+DEB_VERSION=$(sed 's/\..*//' /etc/debian_version)
 
-ynh_install_app_dependencies $pkg_dependencies
+case DEB_VERSION in
+
+  10)
+    repo="https://packages.microsoft.com/debian/10/prod buster main"
+    ;;
+
+  11)
+    repo="https://packages.microsoft.com/debian/11/prod bullseye main"
+    ;;
+
+  *)
+    repo=""
+    ;;
+esac
+
+ynh_install_extra_app_dependencies --repo=$repo --package="aspnetcore-runtime-6.0" 
 
 #=================================================
 # CREATE DEDICATED USER
@@ -121,24 +93,6 @@ ynh_script_progression --message="Configuring system user..." --time --weight=1
 # Create a system user
 ynh_system_user_create --username=$app --home_dir="$final_path"
 
-#=================================================
-# CREATE A MYSQL DATABASE
-#=================================================
-ynh_script_progression --message="Creating a MySQL database..." --time --weight=1
-
-### Use these lines if you need a database for the application.
-### `ynh_mysql_setup_db` will create a database, an associated user and a ramdom password.
-### The password will be stored as 'mysqlpwd' into the app settings,
-### and will be available as $db_pwd
-### If you're not using these lines:
-###		- Remove the section "BACKUP THE MYSQL DATABASE" in the backup script
-###		- Remove also the section "REMOVE THE MYSQL DATABASE" in the remove script
-###		- As well as the section "RESTORE THE MYSQL DATABASE" in the restore script
-
-db_name=$(ynh_sanitize_dbid --db_name=$app)
-db_user=$db_name
-ynh_app_setting_set --app=$app --key=db_name --value=$db_name
-ynh_mysql_setup_db --db_user=$db_user --db_name=$db_name
 
 #=================================================
 # DOWNLOAD, CHECK AND UNPACK SOURCE
@@ -163,25 +117,6 @@ chmod 750 "$final_path"
 chmod -R o-rwx "$final_path"
 chown -R $app:www-data "$final_path"
 
-#=================================================
-# PHP-FPM CONFIGURATION
-#=================================================
-ynh_script_progression --message="Configuring PHP-FPM..." --time --weight=1
-
-### `ynh_add_fpm_config` is used to set up a PHP config.
-### You can remove it if your app doesn't use PHP.
-### `ynh_add_fpm_config` will use the files conf/php-fpm.conf
-### If you're not using these lines:
-###		- You can remove these files in conf/.
-###		- Remove the section "BACKUP THE PHP-FPM CONFIGURATION" in the backup script
-###		- Remove also the section "REMOVE PHP-FPM CONFIGURATION" in the remove script
-###		- As well as the section "RESTORE THE PHP-FPM CONFIGURATION" in the restore script
-###		  with the reload at the end of the script.
-###		- And the section "PHP-FPM CONFIGURATION" in the upgrade script
-
-# Create a dedicated PHP-FPM config
-ynh_add_fpm_config
-
 #=================================================
 # NGINX CONFIGURATION
 #=================================================
@@ -192,112 +127,14 @@ ynh_script_progression --message="Configuring NGINX web server..." --time --weig
 # Create a dedicated NGINX config
 ynh_add_nginx_config
 
-#=================================================
-# SPECIFIC SETUP
-#=================================================
-# ...
-#=================================================
-
-#=================================================
-# CREATE DATA DIRECTORY
-#=================================================
-ynh_script_progression --message="Creating a data directory..." --time --weight=1
-
-### Use these lines if you need to create a directory to store "persistent files" for the application.
-### Usually this directory is used to store uploaded files or any file that won't be updated during 
-### an upgrade and that won't be deleted during app removal unless "--purge" option is used.
-### If you're not using these lines:
-###		- Remove the section "BACKUP THE DATA DIR" in the backup script
-###		- Remove the section "RESTORE THE DATA DIRECTORY" in the restore script
-###     - As well as the section "REMOVE DATA DIR" in the remove script
-
-datadir=/home/yunohost.app/$app
-ynh_app_setting_set --app=$app --key=datadir --value=$datadir
-
-mkdir -p $datadir
-
-# FIXME: this should be managed by the core in the future
-# Here, as a packager, you may have to tweak the ownerhsip/permissions
-# such that the appropriate users (e.g. maybe www-data) can access
-# files in some cases.
-# But FOR THE LOVE OF GOD, do not allow r/x for "others" on the entire folder -
-# this will be treated as a security issue.
-chmod 750 "$datadir"
-chmod -R o-rwx "$datadir"
-chown -R $app:www-data "$datadir"
-
-#=================================================
-# ADD A CONFIGURATION
-#=================================================
-ynh_script_progression --message="Adding a configuration file..." --time --weight=1
-
-### You can add specific configuration files.
-###
-### Typically, put your template conf file in ../conf/your_config_file
-### The template may contain strings such as __FOO__ or __FOO_BAR__,
-### which will automatically be replaced by the values of $foo and $foo_bar
-###
-### ynh_add_config will also keep track of the config file's checksum,
-### which later during upgrade may allow to automatically backup the config file
-### if it's found that the file was manually modified
-###
-### Check the documentation of `ynh_add_config` for more info.
-
-ynh_add_config --template="some_config_file" --destination="$final_path/some_config_file"
-
-# FIXME: this should be handled by the core in the future
-# You may need to use chmod 600 instead of 400,
-# for example if the app is expected to be able to modify its own config
-chmod 400 "$final_path/some_config_file"
-chown $app:$app "$final_path/some_config_file"
-
-### For more complex cases where you want to replace stuff using regexes,
-### you shoud rely on ynh_replace_string (which is basically a wrapper for sed)
-### When doing so, you also need to manually call ynh_store_file_checksum
-###
-### ynh_replace_string --match_string="match_string" --replace_string="replace_string" --target_file="$final_path/some_config_file"
-### ynh_store_file_checksum --file="$final_path/some_config_file"
-
 #=================================================
 # SETUP SYSTEMD
 #=================================================
 ynh_script_progression --message="Configuring a systemd service..." --time --weight=1
 
-### `ynh_systemd_config` is used to configure a systemd script for an app.
-### It can be used for apps that use sysvinit (with adaptation) or systemd.
-### Have a look at the app to be sure this app needs a systemd script.
-### `ynh_systemd_config` will use the file conf/systemd.service
-### If you're not using these lines:
-###		- You can remove those files in conf/.
-###		- Remove the section "BACKUP SYSTEMD" in the backup script
-###		- Remove also the section "STOP AND REMOVE SERVICE" in the remove script
-###		- As well as the section "RESTORE SYSTEMD" in the restore script
-###		- And the section "SETUP SYSTEMD" in the upgrade script
-
 # Create a dedicated systemd config
 ynh_add_systemd_config
 
-#=================================================
-# SETUP APPLICATION WITH CURL
-#=================================================
-
-### Use these lines only if the app installation needs to be finalized through
-### web forms. We generally don't want to ask the final user,
-### so we're going to use curl to automatically fill the fields and submit the
-### forms.
-
-# Set the app as temporarily public for curl call
-ynh_script_progression --message="Configuring SSOwat..." --time --weight=1
-# Making the app public for curl
-ynh_permission_update --permission="main" --add="visitors"
-
-# Installation with curl
-ynh_script_progression --message="Finalizing installation..." --time --weight=1
-ynh_local_curl "/INSTALL_PATH" "key1=value1" "key2=value2" "key3=value3"
-
-# Remove the public access
-ynh_permission_update --permission="main" --remove="visitors"
-
 #=================================================
 # GENERIC FINALIZATION
 #=================================================
@@ -305,15 +142,6 @@ ynh_permission_update --permission="main" --remove="visitors"
 #=================================================
 ynh_script_progression --message="Configuring log rotation..." --time --weight=1
 
-### `ynh_use_logrotate` is used to configure a logrotate configuration for the logs of this app.
-### Use this helper only if there is effectively a log file for this app.
-### If you're not using this helper:
-###		- Remove the section "BACKUP LOGROTATE" in the backup script
-###		- Remove also the section "REMOVE LOGROTATE CONFIGURATION" in the remove script
-###		- As well as the section "RESTORE THE LOGROTATE CONFIGURATION" in the restore script
-###		- And the section "SETUP LOGROTATE" in the upgrade script
-
-# Use logrotate to manage application logfile(s)
 ynh_use_logrotate
 
 #=================================================
@@ -321,15 +149,6 @@ ynh_use_logrotate
 #=================================================
 ynh_script_progression --message="Integrating service in YunoHost..." --time --weight=1
 
-### `yunohost service add` integrates a service in YunoHost. It then gets
-### displayed in the admin interface and through the others `yunohost service` commands.
-### (N.B.: this line only makes sense if the app adds a service to the system!)
-### If you're not using these lines:
-###		- You can remove these files in conf/.
-###		- Remove the section "REMOVE SERVICE INTEGRATION IN YUNOHOST" in the remove script
-###		- As well as the section "INTEGRATE SERVICE IN YUNOHOST" in the restore script
-###		- And the section "INTEGRATE SERVICE IN YUNOHOST" in the upgrade script
-
 yunohost service add $app --description="A short description of the app" --log="/var/log/$app/$app.log"
 
 ### Additional options starting with 3.8:
@@ -364,14 +183,6 @@ ynh_script_progression --message="Starting a systemd service..." --time --weight
 # Start a systemd service
 ynh_systemd_action --service_name=$app --action="start" --log_path="/var/log/$app/$app.log"
 
-#=================================================
-# SETUP FAIL2BAN
-#=================================================
-ynh_script_progression --message="Configuring Fail2Ban..." --time --weight=1
-
-# Create a dedicated Fail2Ban config
-ynh_add_fail2ban_config --logpath="/var/log/nginx/${domain}-error.log" --failregex="Regex to match into the log for a failed login"
-
 #=================================================
 # SETUP SSOWAT
 #=================================================
diff --git a/scripts/remove b/scripts/remove
index 29da1fd..77751fc 100755
--- a/scripts/remove
+++ b/scripts/remove
@@ -18,10 +18,7 @@ app=$YNH_APP_INSTANCE_NAME
 
 domain=$(ynh_app_setting_get --app=$app --key=domain)
 port=$(ynh_app_setting_get --app=$app --key=port)
-db_name=$(ynh_app_setting_get --app=$app --key=db_name)
-db_user=$db_name
 final_path=$(ynh_app_setting_get --app=$app --key=final_path)
-datadir=$(ynh_app_setting_get --app=$app --key=datadir)
 
 #=================================================
 # STANDARD REMOVE
@@ -52,14 +49,6 @@ ynh_script_progression --message="Removing logrotate configuration..." --time --
 # Remove the app-specific logrotate config
 ynh_remove_logrotate
 
-#=================================================
-# REMOVE THE MYSQL DATABASE
-#=================================================
-ynh_script_progression --message="Removing the MySQL database..." --time --weight=1
-
-# Remove a database if it exists, along with the associated user
-ynh_mysql_remove_db --db_user=$db_user --db_name=$db_name
-
 #=================================================
 # REMOVE APP MAIN DIR
 #=================================================
@@ -68,17 +57,6 @@ ynh_script_progression --message="Removing app main directory..." --time --weigh
 # Remove the app directory securely
 ynh_secure_remove --file="$final_path"
 
-#=================================================
-# REMOVE DATA DIR
-#=================================================
-
-# Remove the data directory if --purge option is used
-if [ "${YNH_APP_PURGE:-0}" -eq 1 ]
-then
-	ynh_script_progression --message="Removing app data directory..." --time --weight=1
-	ynh_secure_remove --file="$datadir"
-fi
-
 #=================================================
 # REMOVE NGINX CONFIGURATION
 #=================================================
@@ -87,14 +65,6 @@ ynh_script_progression --message="Removing NGINX web server configuration..." --
 # Remove the dedicated NGINX config
 ynh_remove_nginx_config
 
-#=================================================
-# REMOVE PHP-FPM CONFIGURATION
-#=================================================
-ynh_script_progression --message="Removing PHP-FPM configuration..." --time --weight=1
-
-# Remove the dedicated PHP-FPM config
-ynh_remove_fpm_config
-
 #=================================================
 # REMOVE DEPENDENCIES
 #=================================================
@@ -113,14 +83,6 @@ then
 	ynh_exec_warn_less yunohost firewall disallow TCP $port
 fi
 
-#=================================================
-# REMOVE FAIL2BAN CONFIGURATION
-#=================================================
-ynh_script_progression --message="Removing Fail2Ban configuration..." --time --weight=1
-
-# Remove the dedicated Fail2Ban config
-ynh_remove_fail2ban_config
-
 #=================================================
 # SPECIFIC REMOVE
 #=================================================
@@ -128,12 +90,6 @@ ynh_remove_fail2ban_config
 #=================================================
 ynh_script_progression --message="Removing various files..." --time --weight=1
 
-# Remove a cron file
-ynh_secure_remove --file="/etc/cron.d/$app"
-
-# Remove a directory securely
-ynh_secure_remove --file="/etc/$app"
-
 # Remove the log files
 ynh_secure_remove --file="/var/log/$app"