diff --git a/conf/config.json5 b/conf/config.json5
new file mode 100644
index 0000000..0ad4358
--- /dev/null
+++ b/conf/config.json5
@@ -0,0 +1,30 @@
+// Extracted from Wetty sources conf/config.json5
+
+{
+  ssh: {
+    // user:    'username',                     // default user to use when ssh-ing
+    host:       '__DOMAIN__',                   // Server to ssh to
+    auth:       'password',                     // shh authentication, method. Defaults to "password", you can use "publickey,password" instead'
+    // pass:    "password",                     // Password to use when sshing
+    // key:     "",                             // path to an optional client private key, connection will be password-less and insecure!
+    port:       22,                             // Port to ssh to
+    knownHosts: '/dev/null',                    // ssh knownHosts file to use
+    // config:  '/home/user/.wetty_ssh_config', // alternative ssh configuration file, see "-F" option in ssh(1)
+  },
+  server:  {
+    base:         '__PATH_URL__',                      // URL base to serve resources from
+    port:         __PORT__,                            // Port to listen on
+    host:         '127.0.0.1',                         // address to listen on
+    title:        'WeTTy - The Web Terminal Emulator', // Page title
+    bypassHelmet: false,                               // Disable Helmet security checks
+  },
+
+  forceSSH: false,  // Force sshing to local machine over login if running as root
+  command: 'login', // Command to run on server. Login will use ssh if connecting to different server
+  /*
+  ssl:{
+    key: 'ssl.key',
+    cert: 'ssl.cert',
+  }
+  */
+}
diff --git a/conf/systemd.service b/conf/systemd.service
index d1cc2b3..b026b2d 100644
--- a/conf/systemd.service
+++ b/conf/systemd.service
@@ -9,11 +9,7 @@ Group=__APP__
 WorkingDirectory=__FINALPATH__/
 Environment=NODE_ENV=production
 Environment="__YNH_NODE_LOAD_PATH__"
-ExecStart=__YARN_BIN_DIR__/wetty \
-    --host 127.0.0.1 \
-    --port __PORT__ \
-    --base __PATH_URL__/ \
-    --sshhost __DOMAIN__
+ExecStart=__YARN_BIN_DIR__/wetty --conf __FINALPATH__/config.json5
 
 [Install]
 WantedBy=multi-user.target
diff --git a/scripts/change_url b/scripts/change_url
index 6c4c0b6..9b6c929 100644
--- a/scripts/change_url
+++ b/scripts/change_url
@@ -102,35 +102,16 @@ fi
 #=================================================
 # SPECIFIC MODIFICATIONS
 #=================================================
-# BUILD YARN DEPENDENCIES
+# CHANGE URL IN CONFIG FILE
 #=================================================
-ynh_script_progression --message="Rebuilding Yarn dependencies..." --weight=2
-
-chown -R "$app":"$app" "$final_path"
-
-pushd "$final_path" || return 1
-    ynh_use_nodejs ; set "${ynh_node_load_PATH:?}"
-    sudo -u "$app" env "$ynh_node_load_PATH" yarn global add wetty@"$YARN_APP_REAL_VERSION"
-    yarn_bin_dir="$(sudo -u "$app" env "$ynh_node_load_PATH" yarn global bin)"
-popd || return 1
-
-
-#=================================================
-# SETUP SYSTEMD
-#=================================================
-ynh_script_progression --message="Configuring the systemd service..." --weight=1
+ynh_script_progression --message="Editing config file..." --weight=2
 
 domain="$new_domain"
 path_url="$new_path"
+# port is already defined in this file
 
-# Create a dedicated systemd config
-ynh_backup_if_checksum_is_different --file="/etc/systemd/system/$app.service"
-ynh_remove_systemd_config
-test -n "${domain}${port}${path_url}${ynh_node_load_PATH}${yarn_bin_dir}"
-ynh_add_systemd_config --others_var="domain port path_url ynh_node_load_PATH yarn_bin_dir"
-ynh_store_file_checksum --file="/etc/systemd/system/$app.service"
-
-systemctl daemon-reload
+ynh_backup_if_checksum_is_different --file="$final_path/config.json5"
+ynh_add_config --template="config.json5" --destination="$final_path/config.json5"
 
 #=================================================
 # GENERIC FINALISATION
diff --git a/scripts/install b/scripts/install
index dc38a54..cbf4bf7 100755
--- a/scripts/install
+++ b/scripts/install
@@ -82,6 +82,8 @@ ynh_app_setting_set --app="$app" --key=final_path --value="$final_path"
 # Download, check integrity, uncompress and patch the source from app.src
 ynh_setup_source --dest_dir="$final_path"
 
+ynh_add_config --template="config.json5" --destination="$final_path/config.json5"
+
 #=================================================
 # NGINX CONFIGURATION
 #=================================================
@@ -119,8 +121,8 @@ popd || return 1
 ynh_script_progression --message="Configuring the systemd service..." --weight=1
 
 # Create a dedicated systemd config
-test -n "${domain}${port}${path_url}${ynh_node_load_PATH}${yarn_bin_dir}"
-ynh_add_systemd_config --others_var="domain port path_url ynh_node_load_PATH yarn_bin_dir"
+test -n "${ynh_node_load_PATH}${yarn_bin_dir}"
+ynh_add_systemd_config --others_var="ynh_node_load_PATH yarn_bin_dir"
 
 #=================================================
 # GENERIC FINALIZATION
diff --git a/scripts/upgrade b/scripts/upgrade
index d21bfcb..8435793 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -93,6 +93,8 @@ if [ "$upgrade_type" == "UPGRADE_APP" ]; then
     ynh_setup_source --dest_dir="$final_path"
 fi
 
+ynh_add_config --template="config.json5" --destination="$final_path/config.json5"
+
 #=================================================
 # NGINX CONFIGURATION
 #=================================================
@@ -130,8 +132,8 @@ popd || return 1
 ynh_script_progression --message="Upgrading systemd configuration..." --weight=1
 
 # Create a dedicated systemd config
-test -n "${domain}${port}${path_url}${ynh_node_load_PATH}${yarn_bin_dir}"
-ynh_add_systemd_config --others_var="domain port path_url ynh_node_load_PATH yarn_bin_dir"
+test -n "${ynh_node_load_PATH}${yarn_bin_dir}"
+ynh_add_systemd_config --others_var="ynh_node_load_PATH yarn_bin_dir"
 
 #=================================================
 # GENERIC FINALIZATION