diff --git a/docs/admin/localhost.md b/docs/admin/localhost.md
index c4dd82de0..33b0379c5 100644
--- a/docs/admin/localhost.md
+++ b/docs/admin/localhost.md
@@ -1,13 +1,13 @@
# Localhot Installation
-To try out the software, you can install it on Ubuntu Server 22.04
+To try out the software, you can install it on Ubuntu 22.04
Operating System. The setup requires a
-machine which can spare 16GB RAM, 8 vCPUs and 50GB Hard Disk
-space to the vagrant box.
+machine which can spare 4GB RAM, 2 vCPUs and 15GB Hard Disk
+space to a the DTaaS application.
A successful installation will create a setup
similar to the one shown in the figure.
-
+
A one-step installation script is provided on this page. This script sets up
the DTaaS software with a user.
@@ -24,13 +24,14 @@ the [Authentication page](client/auth.md).
!!! Information
It is sufficient to have [user-owned oauth](https://docs.gitlab.com/ee/integration/oauth_provider.html#create-a-user-owned-application)
- application.
+ application. You can create this application
+ in your gitlab account.
You need the following information from the OAuth application registered on Gitlab:
| Gitlab Variable Name | Variable name in Client env.js | Default Value |
| :------------------- | :----------------------------- | :----------------------------------------------- |
-| OAuth Provider | REACT_APP_AUTH_AUTHORITY | |
+| OAuth Provider | REACT_APP_AUTH_AUTHORITY | or |
| Application ID | REACT_APP_CLIENT_ID |
| Callback URL | REACT_APP_REDIRECT_URI | |
| Scopes | REACT_APP_GITLAB_SCOPES | openid, profile, read_user, read_repository, api |
@@ -60,6 +61,22 @@ bash single-script-install.sh --env local
!!! warning
This test installation has default credentials and is thus highly insecure.
+## Post install
+
+After the install-script. Please change
+[Gitlab OAuth](#1-gitlab-oauth-application) details in
+
+```txt
+~/DTaaS/client/build/env.js
+```
+
+and change `filepath`
+to your local settings in the following file.
+
+```txt
+~/DTaaS/servers/lib/.env
+```
+
## Post-install Check
Now when you visit your domain, you should be able to login through your
diff --git a/docs/admin/localhost.png b/docs/admin/localhost.png
new file mode 100644
index 000000000..1df10784a
Binary files /dev/null and b/docs/admin/localhost.png differ
diff --git a/docs/developer/system/DTaaS.drawio b/docs/developer/system/DTaaS.drawio
index cda921ec6..47566f8dc 100644
--- a/docs/developer/system/DTaaS.drawio
+++ b/docs/developer/system/DTaaS.drawio
@@ -1,6 +1,6 @@
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