🔧 feat(casaos-nextcloud): Add LAN IP to Nextcloud config (#40)

This commit adds the LAN IP address to the Nextcloud configuration file
(`config.php`). The changes ensure that Nextcloud can be accessed using the
LAN IP address, in addition to the default `localhost` address.

The key changes are:

- Implement a function `Get_IPs()` to reliably detect the LAN IP address,
  prioritizing non-loopback and non-docker interfaces.
- Use the detected LAN IP address to update the `config.php` file, adding it
  as an additional entry in the `trusted_domains` setting.
- Backup the original `config.php` file before making changes.

casaos-add-lan-ip-to-nextcloud-config/run.sh

@@ -1,13 +1,37 @@
 #!/usr/bin/env bash
 
-# Get the LAN IP address
-lan_ip=$(hostname -I | awk '{print $1}')
+# Function to get LAN IP addresses, prioritizing non-loopback and non-docker interfaces
+Get_IPs() {
+    # Try ip command first (more reliable)
+    if command -v ip >/dev/null 2>&1; then
+        # Get all IPv4 addresses, exclude loopback (127.0.0.0/8) and docker interfaces
+        ip -4 addr show | grep -v "inet 127\." | grep -v "docker" | grep -v "br-" | grep -v "veth" | grep "inet" | awk '{print $2}' | cut -d/ -f1
+    # Fall back to ifconfig if ip command is not available
+    elif command -v ifconfig >/dev/null 2>&1; then
+        # Get all IPv4 addresses, exclude loopback (127.0.0.0/8) and docker interfaces
+        ifconfig | grep -v "inet 127\." | grep -v "docker" | grep -v "br-" | grep -v "veth" | grep "inet" | awk '{print $2}' | cut -d: -f2
+    # Last resort, try hostname -I but filter out loopback addresses
+    else
+        hostname -I | tr ' ' '\n' | grep -v "^127\." | head -n 1
+    fi
+}
+
+# Get the first valid LAN IP address
+lan_ip=$(Get_IPs | head -n 1)
+
+# If no valid IP was found, exit with error
+if [ -z "$lan_ip" ]; then
+    echo "Error: Could not determine LAN IP address."
+    exit 1
+fi
+
+echo "Using LAN IP: $lan_ip"
 
 # Backup the original config.php file
 cp /DATA/AppData/big-bear-nextcloud/html/config/config.php /DATA/AppData/big-bear-nextcloud/html/config/config.php.bak
 
 # Add the LAN IP to the config.php file
-awk -v ip="$lan_ip" '/0 => '\''localhost'\''/{print; print "    1 => '\''"ip"'\'',"; next}1' /DATA/AppData/big-bear-nextcloud/html/config/config.php.bak > /DATA/AppData/big-bear-nextcloud/html/config/config.php
+awk -v ip="$lan_ip" '/0 => '\''localhost'\''/{print; print "    1 => '\''" ip "'\'',"; next}1' /DATA/AppData/big-bear-nextcloud/html/config/config.php.bak > /DATA/AppData/big-bear-nextcloud/html/config/config.php
 
 # Get the path to the docker-compose.yml file
 COMPOSE_FILE="/var/lib/casaos/apps/big-bear-nextcloud/docker-compose.yml"