docs: update node.md

docs/node.md

@@ -2,14 +2,22 @@
 
 ## Install and Deploy using Docker
 
-1. Install docker [(setup docs)](https://github.com/NetSepio/erebrus/blob/main/docs/setup.md).
+1. Install docker using this [script](https://github.com/NetSepio/erebrus/blob/main/docs/setup.md) (For Ubuntu server). Or refer the official [documentation](https://docs.docker.com/engine/install) 
 
-2. create a .env file in same directory and define the environment for erebrus . you can use template from [.sample-env](https://github.com/NetSepio/erebrus/blob/main/.sample-env). Make sure to put the correct server URL.
+2. create a .env file in same directory and define the environment for erebrus . you can use template from [.sample-env](https://github.com/NetSepio/erebrus/blob/main/.sample-env). Make sure to put the correct server URL. Example:
+```
+DOMAIN=http://255.255.255.255:9080
+HOST_IP=255.255.255.255
+WG_ENDPOINT_HOST=255.255.255.255
+```
+replace `255.255.255.255` with the server IP address
 
-3. Open incoming request to ports: TCP Ports 9080(http), 9090(gRPC), 9001(p2p) and UDP port 51820 of your server to communicate with the gateway  
+3. Open incoming request to ports: TCP Ports `9080`(http),` 9090`(gRPC),` 9001`(p2p) and UDP port `51820` of your server to communicate with the gateway  
 
 4. Pull the ererbus docker image
-
+```
+docker pull ghcr.io/netsepio/erebrus:main
+```
 5. Run the Image
 
 ```
@@ -21,5 +29,4 @@ docker run -d -p 9080:9080/tcp -p 9002:9002/tcp -p 51820:51820/udp \
 -v ~/wireguard/:/etc/wireguard/ \
 --name erebrus --env-file .env \
 ghcr.io/netsepio/erebrus:main
-
-```
+```