diff --git a/conf/nginx.conf b/conf/nginx.conf
index 0ff3d09..260b23d 100644
--- a/conf/nginx.conf
+++ b/conf/nginx.conf
@@ -1,6 +1,6 @@
-location PATHTOCHANGE1 {
+location __PATH__ {
         proxy_redirect http:// https://;
-        proxy_pass         http://127.0.0.1:SEAHUB_PORT;
+        proxy_pass         http://127.0.0.1:__SEAHUB_PORT__;
         proxy_set_header   Host $host;
         proxy_set_header   X-Real-IP $remote_addr;
         proxy_set_header   X-Forwarded-For $proxy_add_x_forwarded_for;
@@ -21,7 +21,7 @@ location PATHTOCHANGE1 {
 }
 
 location /seafhttp/ {
-        proxy_pass http://127.0.0.1:SEAFILE_FILESERVER_PORT/;
+        proxy_pass http://127.0.0.1:__FILESERVER_PORT__/;
         client_max_body_size 0;
         proxy_connect_timeout  36000s;
         proxy_read_timeout  36000s;
@@ -29,12 +29,12 @@ location /seafhttp/ {
 }
 
 
-location PATHTOCHANGE2media/ {
-        alias ALIASTOCHANGEseafile-server-latest/seahub/media/;
+location __PATH__/media/ {
+        alias  __FINALPATH__seafile-server-latest/seahub/media/;
 }
 
 location /seafdav {
-        fastcgi_pass    127.0.0.1:WEBDAV_PORT;
+        fastcgi_pass    127.0.0.1:__WEBDAV_PORT__;
         fastcgi_param   SCRIPT_FILENAME     $document_root$fastcgi_script_name;
         fastcgi_param   PATH_INFO           $fastcgi_script_name;
 
diff --git a/scripts/_common.sh b/scripts/_common.sh
index 77dad47..5de364f 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -32,14 +32,14 @@ get_configuration() {
     fi
 }
 
-set_path_2() {
-	if [[ $path == '/' ]]
-	then
-		path2=$path
-	else
-		path2=$path"/"
-	fi
-}
+# set_path_2() {
+# 	if [[ $path == '/' ]]
+# 	then
+# 		path2=$path
+# 	else
+# 		path2=$path"/"
+# 	fi
+# }
 
 config_nginx() {
 
@@ -54,15 +54,17 @@ config_nginx() {
 		ynh_app_setting_set $app fileserver_port $fileserver_port
 	fi
 
-	ynh_replace_string PATHTOCHANGE1 $path ../conf/nginx.conf
-	ynh_replace_string PATHTOCHANGE2 $path2 ../conf/nginx.conf
-	ynh_replace_string ALIASTOCHANGE $final_path/ ../conf/nginx.conf
-	ynh_replace_string SEAHUB_PORT $seahub_port ../conf/nginx.conf
-	ynh_replace_string SEAFILE_FILESERVER_PORT $fileserver_port ../conf/nginx.conf
-	ynh_replace_string WEBDAV_PORT $webdav_port ../conf/nginx.conf
-	cp ../conf/nginx.conf /etc/nginx/conf.d/$domain.d/seafile.conf
-	
-	systemctl reload nginx.service
+# 	ynh_replace_string PATHTOCHANGE1 $path ../conf/nginx.conf
+# 	ynh_replace_string PATHTOCHANGE2 $path2 ../conf/nginx.conf
+# 	ynh_replace_string ALIASTOCHANGE $final_path/ ../conf/nginx.conf
+# 	ynh_replace_string SEAHUB_PORT $seahub_port ../conf/nginx.conf
+# 	ynh_replace_string SEAFILE_FILESERVER_PORT $fileserver_port ../conf/nginx.conf
+# 	ynh_replace_string WEBDAV_PORT $webdav_port ../conf/nginx.conf
+# 	cp ../conf/nginx.conf /etc/nginx/conf.d/$domain.d/seafile.conf
+# 	
+# 	systemctl reload nginx.service
+
+    ynh_add_nginx_config 'seahub_port fileserver_port webdav_port'
 }
 
 install_source() {
@@ -71,10 +73,11 @@ install_source() {
 }
 
 install_dependance() {
-	ynh_install_app_dependencies python2.7 python-pip python-setuptools python-simplejson python-imaging python-mysqldb python-flup expect python-requests python-dev
+	ynh_install_app_dependencies python2.7 python-pip python-setuptools python-simplejson python-imaging python-mysqldb python-flup expect python-requests python-dev \
+        libtiff5-dev libjpeg8-dev zlib1g-dev libfreetype6-dev liblcms2-dev libwebp-dev libharfbuzz-dev libfribidi-dev tcl8.6-dev tk8.6-dev python-tk # For building pillow
 	# Upgrade setuptools for jessie because the new moviepy package is not compatible with setuptools 5.x
 	[ "$(lsb_release --codename --short)" = "jessie" ] && pip install --upgrade setuptools
-	pip install pillow moviepy
+	pip install --upgrade pillow moviepy
 }
 
 ynh_clean_setup () {
diff --git a/scripts/change_url b/scripts/change_url
index 8566d5d..f22c7fd 100644
--- a/scripts/change_url
+++ b/scripts/change_url
@@ -16,16 +16,12 @@ source ./_common.sh
 
 # Retrive arguments
 old_domain=$YNH_APP_OLD_DOMAIN
-old_path=$YNH_APP_OLD_PATH
-
-new_domain=$YNH_APP_NEW_DOMAIN
-new_path=$YNH_APP_NEW_PATH
-
-test -n "$old_path" || old_path="/"
-test -n "$new_path" || new_path="/"
-
-new_path=$(ynh_normalize_url_path $new_path)
-old_path=$(ynh_normalize_url_path $old_path)
+domain=$YNH_APP_OLD_DOMAIN
+old_path=$(ynh_normalize_url_path ${YNH_APP_OLD_PATH:-'/'})
+path_url=$(ynh_normalize_url_path ${YNH_APP_NEW_PATH:-'/'})
+seahub_port=$(ynh_app_setting_get $app seahub_port)
+fileserver_port=$(ynh_app_setting_get $app fileserver_port)
+webdav_port=$(ynh_app_setting_get $app webdav_port)
 
 # Get dest folder and system user
 get_configuration
@@ -35,67 +31,54 @@ if [[ $old_path == '/' ]]
 then
     old_path2=$old_path
 else
-   old_path2=$old_path'/'
+    old_path2=$old_path'/'
 fi
 
-if [[ $new_path == '/' ]]
+if [[ $path_url == '/' ]]
 then
-    new_path2=$new_path
+    path_url2=$path_url
 else
-    new_path2=$new_path'/'
-fi
-
-# CHECK WHICH PARTS SHOULD BE CHANGED
-change_domain=0
-if [ "$old_domain" != "$new_domain" ]
-then
-	change_domain=1
-fi
-
-change_path=0
-if [ "$old_path" != "$new_path" ]
-then
-	change_path=1
+    path_url2=$path_url'/'
 fi
 
 #=================================================
 # STANDARD MODIFICATIONS
 #=================================================
 
-# MODIFY URL IN NGINX CONF
-nginx_conf_path=/etc/nginx/conf.d/$old_domain.d/$app.conf
-
-# Change the path in the nginx config file
-if [ $change_path -eq 1 ]
+# Update nginx config
+if [ "$old_domain" != "$domain" ]
 then
-	ynh_replace_string "location $old_path {" "location $new_path {" "$nginx_conf_path"
-	ynh_replace_string "location ${old_path2}media/ {" "location ${new_path2}media/ {" "$nginx_conf_path"
-fi
+    old_file_path="/etc/nginx/conf.d/$old_domain.d/$app.conf"
+    new_file_path="/etc/nginx/conf.d/$domain.d/$app.conf"
+    mv "$old_file_path" "$new_file_path"
 
-# Change the domain for nginx
-if [ $change_domain -eq 1 ]
-then
-	sudo mv $nginx_conf_path /etc/nginx/conf.d/$new_domain.d/$app.conf
+    # Change the checksum setting name
+    checksum_setting_old_name=checksum_${old_file_path//[\/ ]/_}
+    checksum_setting_new_name=checksum_${new_file_path//[\/ ]/_}
+    checksum_value=$(ynh_app_setting_get $app $checksum_setting_old_name)
+    ynh_app_setting_set $app $checksum_setting_new_name $checksum_value
 fi
+ynh_add_nginx_config 'seahub_port fileserver_port webdav_port'
+
 
 # Stop service before any change
 sudo systemctl stop seafile-server.service
 
 # Update Seafile Config
-ynh_replace_string "SERVICE_URL = https://$old_domain$old_path" "SERVICE_URL = https://$new_domain$new_path" $final_path/conf/ccnet.conf
+ynh_replace_string "SERVICE_URL = https://$old_domain$old_path" "SERVICE_URL = https://$domain$path_url" $final_path/conf/ccnet.conf
 
-ynh_replace_string 'FILE_SERVER_ROOT = "https://'"$old_domain"'/seafhttp"' 'FILE_SERVER_ROOT = "https://'"$new_domain"'/seafhttp"' $final_path/conf/seahub_settings.py
-ynh_replace_string 'SITE_ROOT = "'"$old_path2"'"' 'SITE_ROOT = "'"$new_path2"'"' $final_path/conf/seahub_settings.py
-ynh_replace_string 'MEDIA_URL = "'"$old_path2"'media/"' 'MEDIA_URL = "'"$new_path2"'media/"' $final_path/conf/seahub_settings.py
-ynh_replace_string "LOGIN_URL = '${old_path2}accounts/login/'" "LOGIN_URL = '${new_path2}accounts/login/'" $final_path/conf/seahub_settings.py
-ynh_replace_string ' = "seafile@'"$old_domain"'"' ' = "seafile@'"$new_domain"'"' $final_path/conf/seahub_settings.py
-sed --in-place "s@ALLOWED_HOSTS = \['${old_domain}'\]@ALLOWED_HOSTS = \['${new_domain}'\]@g" $final_path/conf/seahub_settings.py
+ynh_replace_string 'FILE_SERVER_ROOT = "https://'"$old_domain"'/seafhttp"' 'FILE_SERVER_ROOT = "https://'"$domain"'/seafhttp"' $final_path/conf/seahub_settings.py
+ynh_replace_string 'SITE_ROOT = "'"$old_path2"'"' 'SITE_ROOT = "'"$path_url2"'"' $final_path/conf/seahub_settings.py
+ynh_replace_string 'MEDIA_URL = "'"$old_path2"'media/"' 'MEDIA_URL = "'"$path_url2"'media/"' $final_path/conf/seahub_settings.py
+ynh_replace_string "LOGIN_URL = '${old_path2}accounts/login/'" "LOGIN_URL = '${path_url2}accounts/login/'" $final_path/conf/seahub_settings.py
+ynh_replace_string ' = "seafile@'"$old_domain"'"' ' = "seafile@'"$domain"'"' $final_path/conf/seahub_settings.py
+sed --in-place "s@ALLOWED_HOSTS = \['${old_domain}'\]@ALLOWED_HOSTS = \['${domain}'\]@g" $final_path/conf/seahub_settings.py
 # Update database
 
 # This fonction relplace all old domain name by the new domain name.
 # use : mysql_relpace_db db_name table collum
 mysql_relpace_db() {
-	sql_request='UPDATE `'"$2"'` SET '"$3 = replace($3, '$old_domain', '$new_domain')"
+	sql_request='UPDATE `'"$2"'` SET '"$3 = replace($3, '$old_domain', '$domain')"
 	ynh_mysql_execute_as_root "$sql_request" $1
 }
 
@@ -157,15 +140,3 @@ mysql_relpace_db seahubdb wiki_personalwiki username
 # Reload services
 sudo systemctl reload nginx.service
 sudo systemctl start seafile-server.service
-
-
-
-
-
-
-
-
-
-
-
-
diff --git a/scripts/experimental_helper.sh b/scripts/experimental_helper.sh
index 21cf3c5..4afaac3 100644
--- a/scripts/experimental_helper.sh
+++ b/scripts/experimental_helper.sh
@@ -54,3 +54,65 @@ ynh_app_package_version () {
     version_key=$(ynh_read_manifest "$manifest_path" "version")
     echo "${version_key/*~ynh/}"
 } 
+
+
+# Create a dedicated nginx config
+#
+# usage: ynh_add_nginx_config "list of others variables to replace"
+#
+# | arg: list of others variables to replace separeted by a space
+# |      for example : 'path_2 port_2 ...'
+#
+# This will use a template in ../conf/nginx.conf
+#   __PATH__      by  $path_url
+#   __DOMAIN__    by  $domain
+#   __PORT__      by  $port
+#   __NAME__      by  $app
+#   __FINALPATH__ by  $final_path
+#
+#  And dynamic variables (from the last example) :
+#   __PATH_2__    by $path_2
+#   __PORT_2__    by $port_2
+#
+ynh_add_nginx_config () {
+	local finalnginxconf="/etc/nginx/conf.d/$domain.d/$app.conf"
+	local others_var=${1:-}
+	ynh_backup_if_checksum_is_different "$finalnginxconf"
+	sudo cp ../conf/nginx.conf "$finalnginxconf"
+
+	# To avoid a break by set -u, use a void substitution ${var:-}. If the variable is not set, it's simply set with an empty variable.
+	# Substitute in a nginx config file only if the variable is not empty
+	if test -n "${path_url:-}"; then
+		# path_url_slash_less is path_url, or a blank value if path_url is only '/'
+		local path_url_slash_less=${path_url%/}
+		ynh_replace_string "__PATH__/" "$path_url_slash_less/" "$finalnginxconf"
+		ynh_replace_string "__PATH__" "$path_url" "$finalnginxconf"
+	fi
+	if test -n "${domain:-}"; then
+		ynh_replace_string "__DOMAIN__" "$domain" "$finalnginxconf"
+	fi
+	if test -n "${port:-}"; then
+		ynh_replace_string "__PORT__" "$port" "$finalnginxconf"
+	fi
+	if test -n "${app:-}"; then
+		ynh_replace_string "__NAME__" "$app" "$finalnginxconf"
+	fi
+	if test -n "${final_path:-}"; then
+		ynh_replace_string "__FINALPATH__" "$final_path" "$finalnginxconf"
+	fi
+	
+	# Replace all other variable given as arguments
+	for v in $others_var
+	do
+        ynh_replace_string "__${v^^}__" "${!v}" "$finalnginxconf"
+	done
+	
+    if [ "${path_url:-}" != "/" ]
+    then
+        ynh_replace_string "^#sub_path_only" "" "$finalnginxconf"
+    fi
+
+	ynh_store_file_checksum "$finalnginxconf"
+
+	sudo systemctl reload nginx
+}
\ No newline at end of file
diff --git a/scripts/install b/scripts/install
index 71845f8..5a91fcc 100644
--- a/scripts/install
+++ b/scripts/install
@@ -16,7 +16,7 @@ source ./_common.sh
 
 # Retrieve arguments
 domain=$YNH_APP_ARG_DOMAIN
-path=$(ynh_normalize_url_path $YNH_APP_ARG_PATH)
+path_url=$(ynh_normalize_url_path $YNH_APP_ARG_PATH)
 server_name="$YNH_APP_ARG_SERVER_NAME"
 admin=$YNH_APP_ARG_ADMIN
 admin_password=$YNH_APP_ARG_ADMIN_PASSWORD
@@ -26,11 +26,16 @@ final_path=/opt/yunohost/$app
 seafile_user=seafile
 
 # Create special path with / at the end
-set_path_2
+if [[ $path_url == '/' ]]
+then
+    path_url2=$path_url
+else
+    path_url2=$path_url"/"
+fi
 
 # Check domain/path availability
-test $(ynh_webpath_available $domain $path) == 'True' || ynh_die "$domain$path is not available, please use an other domain or path."
-ynh_webpath_register $app $domain $path
+test $(ynh_webpath_available $domain $path_url) == 'True' || ynh_die "$domain$path_url is not available, please use an other domain or path."
+ynh_webpath_register $app $domain $path_url
 
 # Check Final Path availability
 test ! -e "$final_path" || ynh_die "This path already contains a folder"
@@ -89,11 +94,11 @@ chmod +x $final_path/seafile-server-$seafile_version/setup-seafile-mysql.sh
 
 # Update seafile config
 ynh_replace_string http:// https:// $final_path/conf/ccnet.conf
-ynh_replace_string :8000 $path $final_path/conf/ccnet.conf
+ynh_replace_string :8000 $path_url $final_path/conf/ccnet.conf
 echo 'FILE_SERVER_ROOT = "https://'$domain'/seafhttp"' | tee -a $final_path/conf/seahub_settings.py
-echo 'SITE_ROOT = "'$path2'"' | tee -a $final_path/conf/seahub_settings.py
+echo 'SITE_ROOT = "'$path_url2'"' | tee -a $final_path/conf/seahub_settings.py
 echo 'SERVE_STATIC = False' | tee -a $final_path/conf/seahub_settings.py
-echo 'MEDIA_URL = "'$path2'media/"' | tee -a $final_path/conf/seahub_settings.py
+echo 'MEDIA_URL = "'$path_url2'media/"' | tee -a $final_path/conf/seahub_settings.py
 echo 'COMPRESS_URL = MEDIA_URL' | tee -a $final_path/conf/seahub_settings.py
 echo "STATIC_URL = MEDIA_URL + 'assets/'" | tee -a $final_path/conf/seahub_settings.py
 echo "LOGIN_URL = '"$path2"accounts/login/'" | tee -a $final_path/conf/seahub_settings.py
diff --git a/scripts/restore b/scripts/restore
index abc5fa5..4a7b02b 100644
--- a/scripts/restore
+++ b/scripts/restore
@@ -16,12 +16,12 @@ source ../settings/scripts/_common.sh
 
 # Retrieve arguments
 domain=$(ynh_app_setting_get $app domain)
-path=$(ynh_normalize_url_path $(ynh_app_setting_get $app path))
+path_url=$(ynh_normalize_url_path $(ynh_app_setting_get $app path))
 db_pwd=$(ynh_app_setting_get ${app} mysqlpwd)
 seafile_data=/home/yunohost.app/seafile-data
 
 # Check domain/path availability
-ynh_webpath_available $domain $path || ynh_die "$domain/$path is not available, please use an other domain or path."
+ynh_webpath_available $domain $path_url || ynh_die "$domain/$path_url is not available, please use an other domain or path."
 
 #=================================================
 # STANDARD RESTORATION STEPS
diff --git a/scripts/upgrade b/scripts/upgrade
index 3d22b18..ce23311 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -19,7 +19,7 @@ get_configuration
 
 # Retrieve arguments
 domain=$(ynh_app_setting_get $app domain)
-path=$(ynh_normalize_url_path $(ynh_app_setting_get $app path))
+path_url=$(ynh_normalize_url_path $(ynh_app_setting_get $app path))
 installed_version=$(ynh_app_setting_get $app installed_version)
 seahub_port=$(ynh_app_setting_get $app seahub_port)
 fileserver_port=$(ynh_app_setting_get $app fileserver_port)
@@ -29,9 +29,6 @@ root_pwd=$(cat /etc/yunohost/mysql)
 # Get configuration for user and final path
 get_configuration
 
-# Create special path with / at the end
-set_path_2
-
 # stop seafile server
 systemctl stop seafile-server.service
 
@@ -133,7 +130,7 @@ fi
 # Update seahub config for old version to version 5.0.4
 if [[ $(grep -c "LOGIN_URL" $final_path/conf/seahub_settings.py) == 0 ]]
 then
-        echo "LOGIN_URL = '$path/accounts/login/'" | tee -a $final_path/conf/seahub_settings.py
+        echo "LOGIN_URL = '$path_url/accounts/login/'" | tee -a $final_path/conf/seahub_settings.py
 fi
 
 # Fix local warning