[Docs/Tools] Validator: support multiple networks + cheat sheet (#941)

## Summary

Allows to support multiple networks in the installation script.

## Issue


- pokt-network/pocket-network-genesis#9

docusaurus/docs/operate/quickstart/docker_compose_debian_cheatsheet.md

@@ -72,7 +72,7 @@ sudo apt-get update
 if command -v ufw > /dev/null 2>&1; then
     sudo ufw allow from 172.16.0.0/12
     sudo ufw allow from 192.168.0.0/16
-    echo "UFW rules added for Docker networks"
+    echo "UFW rules added for Docker networks and validator endpoint"
 else
     echo "UFW is not installed, skipping firewall configuration"
 fi
@@ -106,9 +106,18 @@ cd poktroll-docker-compose-example
 
 ## Update your environment
 
+First, copy the sample environment file:
 ```bash
 cp .env.sample .env
+```
+
+By default, the `.env` file uses `testnet-beta`. If you want to use a different network, update the `NETWORK_NAME` in your `.env` file to one of:
+- `testnet-alpha` - Unstable testnet
+- `testnet-beta` - Stable testnet (default)
+- `mainnet` - Production network
 
+Then set your external IP and source the environment:
+```bash
 EXTERNAL_IP=$(curl -4 ifconfig.me/ip)
 sed -i -e s/NODE_HOSTNAME=/NODE_HOSTNAME=$EXTERNAL_IP/g .env
 
@@ -169,15 +178,19 @@ FINALLY, `source .env` to update the environment variables.
 
 ## Fund your accounts
 
-Run the following:
+Run the following to see your addresses:
 
 ```bash
 show_actor_addresses
 ```
 
-For each one, fund the accounts using the [faucet](https://faucet.testnet.pokt.network/)
+Get the faucet URL for your network:
+
+```bash
+show_faucet_url
+```
 
-Next, run this helper (it's part of `helpers.sh`) to find each of them on the explorer:
+Fund each address using the faucet URL shown above. Then run this helper to find each account on the explorer:
 
 ```bash
 show_explorer_urls

docusaurus/docs/operate/quickstart/full_node_cheatsheet.md

@@ -0,0 +1,145 @@
+---
+sidebar_position: 3
+title: Full Node Cheat Sheet
+---
+
+This cheat sheet provides quick instructions for installing a Full Node using an automated script.
+
+- [Pre-Requisites](#pre-requisites)
+- [Install a Full Node using Cosmovisor](#install-a-full-node-using-cosmovisor)
+- [What Gets Installed](#what-gets-installed)
+- [Useful Commands](#useful-commands)
+  - [Check the status of your node](#check-the-status-of-your-node)
+  - [View the logs](#view-the-logs)
+  - [Stop the node](#stop-the-node)
+  - [Start the node](#start-the-node)
+  - [Restart the node](#restart-the-node)
+  - [Advanced Operations](#advanced-operations)
+- [Automatic Upgrades](#automatic-upgrades)
+
+### Pre-Requisites
+
+1. **Linux-based System**: Ensure you have a Debian-based Linux distribution (other distributions may work but are not fully supported).
+2. **Root or Sudo Access**: You need administrative privileges to run the installation script.
+3. **Dedicated Server or Virtual Machine**: Any provider should work (Vultr and Hetzner have been tested).
+
+### Install a Full Node using Cosmovisor
+
+To install and set up a Full Node, follow these steps:
+
+1. **Download the Installation Script**:
+
+   ```bash
+   curl -O https://raw.githubusercontent.com/pokt-network/poktroll/main/tools/installer/full-node.sh
+   ```
+
+2. **Run the Script with Sudo Privileges**:
+
+   ```bash
+   sudo bash full-node.sh
+   ```
+
+3. **Follow the Prompts**:
+
+   - **Choose the Network**: Select `testnet-alpha`, `testnet-beta`, or `mainnet`.
+   - **Set Username**: Input the desired username to run `poktrolld` (default: `poktroll`).
+   - **Set Node Moniker**: Input the node moniker (default: your hostname).
+   - **Confirm Seeds and Genesis File**: The script fetches seeds and the genesis file automatically.
+   - **External IP Address**: The script detects your external IP address. Confirm or input manually if incorrect.
+
+The script will handle the installation of dependencies, user creation, environment variable setup, and configuration of Cosmovisor and `poktrolld`.
+
+### What Gets Installed
+
+When you run the installation script, the following components are set up:
+
+1. **System User**: A dedicated user (default: `poktroll`) is created to run the node securely.
+
+2. **Cosmovisor**: A binary manager that handles chain upgrades automatically:
+   - Location: `/home/poktroll/bin/cosmovisor`
+   - Purpose: Manages different versions of `poktrolld` and handles chain upgrades
+   - Configuration: Set up to automatically download and switch to new binaries during upgrades
+
+3. **Poktrolld**: The core node software:
+   - Location: `/home/poktroll/.poktroll/cosmovisor/genesis/bin/poktrolld`
+   - Configuration: `/home/poktroll/.poktroll/config/`
+   - Data: `/home/poktroll/.poktroll/data/`
+
+4. **Systemd Service**: A service that manages the node:
+   - Name: `cosmovisor.service`
+   - Status: Enabled and started automatically
+   - Configured for automatic restarts and upgrades
+
+### Useful Commands
+
+After installation, you can manage your node using the following commands:
+
+#### Check the status of your node
+
+```bash
+sudo systemctl status cosmovisor.service
+```
+
+#### View the logs
+
+```bash
+sudo journalctl -u cosmovisor.service -f
+```
+
+#### Stop the node
+
+```bash
+sudo systemctl stop cosmovisor.service
+```
+
+#### Start the node
+
+```bash
+sudo systemctl start cosmovisor.service
+```
+
+#### Restart the node
+
+```bash
+sudo systemctl restart cosmovisor.service
+```
+
+#### Advanced Operations
+
+Check the current version:
+```bash
+sudo -u poktroll poktrolld version
+```
+
+View the Cosmovisor directory structure:
+```bash
+ls -la /home/poktroll/.poktroll/cosmovisor/
+```
+
+Check if an upgrade is available:
+```bash
+ls -la /home/poktroll/.poktroll/cosmovisor/upgrades/
+```
+
+View node configuration:
+```bash
+cat /home/poktroll/.poktroll/config/config.toml
+```
+
+### Automatic Upgrades
+
+Your node is configured to handle chain upgrades automatically through Cosmovisor. When a chain upgrade is proposed and approved:
+
+1. Cosmovisor will download the new binary
+2. The node will stop at the designated upgrade height
+3. Cosmovisor will switch to the new binary
+4. The node will restart automatically
+
+No manual intervention is required for standard upgrades.
+
+<!-- 
+## Becoming a Validator
+
+TODO(@okdas, #754): Add instructions for becoming a validator.
+
+-->