Add Getting SSL section

Configuration.md

@@ -1,3 +1,53 @@
+## Getting SSL
+
+### ACME
+
+To manage SSL certificates using ACME:
+
+1. Ensure your domain is correctly resolved to the server.
+2. Run the `x-ui` command in the terminal, then choose `SSL Certificate Management`.
+3. You will be presented with the following options:
+
+   - **Get SSL:** Obtain SSL certificates.
+   - **Revoke:** Revoke existing SSL certificates.
+   - **Force Renew:** Force renewal of SSL certificates.
+   - **Show Existing Domains:** Display all domain certificates available on the server.  
+   - **Set Certificate Paths for the Panel:** Specify the certificate for your domain to be used by the panel. 
+
+### Certbot
+
+To install and use Certbot:
+
+```sh
+apt-get install certbot -y
+certbot certonly --standalone --agree-tos --register-unsafely-without-email -d yourdomain.com
+certbot renew --dry-run
+```
+
+### Cloudflare
+
+The management script includes a built-in SSL certificate application for Cloudflare. To use this script to apply for a certificate, you need the following:
+
+- Cloudflare registered email
+- Cloudflare Global API Key
+- The domain name must be resolved to the current server through Cloudflare
+
+**How to get the Cloudflare Global API Key:**
+
+1. Run the `x-ui` command in the terminal, then choose `Cloudflare SSL Certificate`.
+2. Visit the link: [Cloudflare API Tokens](https://dash.cloudflare.com/profile/api-tokens).
+3. Click on "View Global API Key" (see the screenshot below):
+
+![](https://github.com/MHSanaei/3x-ui/raw/main/media/APIKey1.PNG)
+
+4. You may need to re-authenticate your account. After that, the API Key will be shown (see the screenshot below):
+
+![](https://github.com/MHSanaei/3x-ui/raw/main/media/APIKey2.png)
+
+When using, just enter your `domain name`, `email`, and `API KEY`. The diagram is as follows:
+
+![](https://github.com/MHSanaei/3x-ui/raw/main/media/DetailEnter.png)
+
 ## Available environment variables
 
 ### `XUI_LOG_LEVEL`