Add update scripts

update_mods.sh

@@ -0,0 +1,57 @@
+#!/usr/bin/env bash
+set -e
+
+REPO_URL="https://zerolands.duckdns.org/git/D3SXX/Minecraft-Server-1.21.1-Mods.git"
+BRANCH="main"
+
+# ─── Install git if missing ───────────────────────────────────────────────────
+install_git() {
+    if command -v apt-get &>/dev/null; then
+        sudo apt-get update -qq && sudo apt-get install -y git
+    elif command -v dnf &>/dev/null; then
+        sudo dnf install -y git
+    elif command -v yum &>/dev/null; then
+        sudo yum install -y git
+    elif command -v pacman &>/dev/null; then
+        sudo pacman -Sy --noconfirm git
+    elif command -v zypper &>/dev/null; then
+        sudo zypper install -y git
+    elif command -v apk &>/dev/null; then
+        sudo apk add --no-cache git
+    elif command -v brew &>/dev/null; then
+        brew install git
+    else
+        echo "ERROR: Could not detect a supported package manager. Install git manually."
+        exit 1
+    fi
+}
+
+if ! command -v git &>/dev/null; then
+    echo "git not found. Attempting to install..."
+    install_git
+fi
+
+# ─── Move to the directory containing this script ────────────────────────────
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+cd "$SCRIPT_DIR"
+
+# ─── Initialise repo if .git is missing ──────────────────────────────────────
+if [ ! -d ".git" ]; then
+    echo "Initialising git repository..."
+    git init
+    git remote add origin "$REPO_URL"
+else
+    # Ensure remote URL is correct
+    git remote set-url origin "$REPO_URL" 2>/dev/null || git remote add origin "$REPO_URL"
+fi
+
+# ─── Full reset ────────────────────────────────
+echo "Fetching latest mods from $REPO_URL ..."
+git fetch --all --prune
+
+echo "Resetting to origin/$BRANCH ..."
+git checkout -B "$BRANCH" "origin/$BRANCH" --
+git reset --hard "origin/$BRANCH"
+git clean -fd
+
+echo "Mods updated successfully."