Add mermaids.sh
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dede23e8db
251
mermaids.sh
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251
mermaids.sh
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#!/bin/bash
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# ct/mermaidjs.sh - Create and configure a self-hosted Mermaid.js editor LXC
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set -euo pipefail
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RED='\033[0;31m'
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GREEN='\033[0;32m'
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YELLOW='\033[1;33m'
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BLUE='\033[0;34m'
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NC='\033[0m'
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log() { echo -e "${GREEN}[$(date +%H:%M:%S)]${NC} $1"; }
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warn() { echo -e "${YELLOW}[$(date +%H:%M:%S)]${NC} $1"; }
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die() { echo -e "${RED}[$(date +%H:%M:%S)]${NC} $1"; exit 1; }
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# Ensure root on Proxmox
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if [[ $EUID -ne 0 ]]; then
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die "This script must be run as root on a Proxmox VE host"
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fi
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# Defaults
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LXC_HOSTNAME="mermaid"
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LXC_ID=""
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LXC_MEMORY=512
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LXC_CORES=1
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LXC_DISK="local-lvm"
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LXC_TEMPLATE="local:vztmpl/debian-12-standard_12.12-1_amd64.tar.zst"
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LXC_ROOT_PASSWORD="mermaid"
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LXC_IP=""
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LXC_NETMASK="24"
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LXC_GATEWAY=""
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LXC_BRIDGE="vmbr0"
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# Auto-increment VMID
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get_next_id() {
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local max=0
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for id in $(pct list | awk 'NR>1 {print $1}'); do
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((id > max)) && max=$id
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done
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echo $((max + 1))
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}
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log "=== Mermaid.js Interactive Editor LXC Setup ==="
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log "This creates a self-hosted Mermaid editor with OFFLINE support."
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read -rp "Hostname (default: mermaid): " HOSTNAME_INPUT
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[[ -n "$HOSTNAME_INPUT" ]] && LXC_HOSTNAME="$HOSTNAME_INPUT"
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read -rp "Container ID (default: $(get_next_id)): " ID_INPUT
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LXC_ID=${ID_INPUT:-$(get_next_id)}
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read -rp "Memory (MB, default: 512): " MEM_INPUT
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LXC_MEMORY=${MEM_INPUT:-512}
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read -rp "CPU Cores (default: 1): " CORES_INPUT
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LXC_CORES=${CORES_INPUT:-1}
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read -rp "Root Password (default: mermaid): " PASS_INPUT
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LXC_ROOT_PASSWORD=${PASS_INPUT:-mermaid}
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read -rp "Disk Storage Pool (default: local-lvm): " DISK_INPUT
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LXC_DISK=${DISK_INPUT:-local-lvm}
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read -rp "Network Bridge (default: vmbr0): " BRIDGE_INPUT
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LXC_BRIDGE=${BRIDGE_INPUT:-vmbr0}
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read -rp "IP Address (e.g., 192.168.1.60; leave blank for DHCP): " IP_INPUT
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LXC_IP="$IP_INPUT"
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if [[ -n "$LXC_IP" ]]; then
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read -rp "Netmask (default: 24): " NETMASK_INPUT
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LXC_NETMASK=${NETMASK_INPUT:-24}
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read -rp "Gateway (blank for none): " GW_INPUT
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LXC_GATEWAY="$GW_INPUT"
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fi
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NET0_ARGS="name=eth0,bridge=$LXC_BRIDGE"
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if [[ -n "$LXC_IP" ]]; then
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NET0_ARGS="$NET0_ARGS,ip=$LXC_IP/$LXC_NETMASK"
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[[ -n "$LXC_GATEWAY" ]] && NET0_ARGS="$NET0_ARGS,gw=$LXC_GATEWAY"
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fi
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# Fail fast if bridge or disk don't exist
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pvesm status | grep -q "$LXC_DISK" || die "Storage pool '$LXC_BRIDGE' not found"
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ip link show "$LXC_BRIDGE" >/dev/null 2>&1 || die "Bridge '$LXC_BRIDGE' not found"
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# === 1. Create LXC Container ===
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log "Creating LXC container $LXC_ID ($LXC_HOSTNAME)..."
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pct create $LXC_ID $LXC_TEMPLATE \
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-hostname $LXC_HOSTNAME \
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-memory $LXC_MEMORY \
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-cores $LXC_CORES \
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-net0 $NET0_ARGS \
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-rootfs $LXC_DISK:1 \
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-ostype debian \
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-password $LXC_ROOT_PASSWORD \
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-onboot 1
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# === 2. Start & wait for boot ===
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log "Starting container..."
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pct start $LXC_ID
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log "Waiting for container to be reachable..."
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for i in {1..40}; do
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if pct exec $LXC_ID -- sh -c "ping -c1 127.0.0.1 >/dev/null 2>&1"; then
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break
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fi
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sleep 1
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done
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# === 3. Prepare install script (bundled offline Mermaid) ===
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log "Deploying Mermaid editor + Caddy..."
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# Generate the install script dynamically (with bundled mermaid.min.js)
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pct push $LXC_ID - <<'EOF' /root/mermaid-install.sh
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#!/bin/bash
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set -euo pipefail
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GREEN='\033[0;32m'
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YELLOW='\033[1;33m'
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BLUE='\033[0;34m'
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NC='\033[0m'
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log() { echo -e "${GREEN}[$(date +%H:%M:%S)]${NC} $1"; }
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# 1. Update & install Caddy & deps
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log "Updating system..."
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apt-get update -qq
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apt-get install -y -qq curl wget
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# 2. Download Mermaid.min.js (offline bundled)
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log "Downloading Mermaid v10.6.1 (offline)..."
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mkdir -p /var/www/mermaid
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wget -q https://cdn.jsdelivr.net/npm/mermaid@10.6.1/dist/mermaid.min.js -O /var/www/mermaid/mermaid.min.js
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# 3. Create the editor HTML (self-contained: editor + preview + Mermaid JS)
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log "Creating Mermaid editor interface..."
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cat > /var/www/mermaid/index.html <<'HTML'
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<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8">
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<title>Self-hosted Mermaid Editor</title>
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<script src="/mermaid.min.js"></script>
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<style>
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body {
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margin: 0;
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font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
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display: grid;
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grid-template-columns: 1fr 1fr;
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height: 100vh;
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}
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textarea {
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width: 100%;
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height: 100%;
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padding: 1rem;
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font-family: monospace;
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font-size: 14px;
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border: none;
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resize: none;
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background: #2d2d2d;
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color: #f8f8f2;
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}
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#preview {
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padding: 1rem;
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overflow: auto;
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border-left: 1px solid #ddd;
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background: #fff;
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}
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.mermaid { max-width: 90%; margin: 0 auto; }
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</style>
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<script>
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mermaid.initialize({startOnLoad: false, securityLevel: 'loose'});
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const editor = document.querySelector('textarea');
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const preview = document.getElementById('preview');
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editor.addEventListener('input', () => {
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const code = editor.value.trim();
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if (code) {
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mermaid.render('diagram', code, svg => preview.innerHTML = svg);
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} else {
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preview.innerHTML = '<p style="color:#999;">Type Mermaid code here...</p>';
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}
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});
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// Initial render
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editor.value = `graph TD
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A[Start] --> B{Decision?}
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B -->|Yes| C[Do A]
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B -->|No| D[Do B]
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C --> E[End]
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D --> E`;
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input();
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</script>
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</head>
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<body>
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<textarea spellcheck="false"></textarea>
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<div id="preview"></div>
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</body>
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</html>
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HTML
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# 4. Caddy config (HTTP only — easy; HTTPS in comment)
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cat > /etc/caddy/Caddyfile <<'CADDY'
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:80 {
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root * /var/www/mermaid
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file_server
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log {
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output file /var/log/caddy/access.log
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}
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}
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# Uncomment below for Let's Encrypt HTTPS
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# mermaid.yourdomain.com {
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# root * /var/www/mermaid
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# file_server
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# }
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CADDY
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# 5. Start & enable Caddy
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rc-service caddy start
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rc-update add caddy
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# 6. Check if Caddy started
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sleep 5
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if curl -sf http://localhost >/dev/null; then
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log "✅ Mermaid Editor is live!"
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else
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warn "Caddy failed — check 'rc-service caddy status' and 'journalctl -u caddy'"
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exit 1
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fi
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# 7. Summary
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IP=$(hostname -I 2>/dev/null | cut -d' ' -f1)
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if [[ -z "$IP" ]]; then
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IP=$(ip -4 addr show eth0 | grep -oP '(?<=inet\s)\d+(\.\d+){3}')
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fi
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log "URL: ${BLUE}http://${IP}${NC}"
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log "Root password: ${YELLOW}$LXC_ROOT_PASSWORD${NC}"
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log "SSH: ssh root@${IP}"
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EOF
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# Push & run the install script inside LXC
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log "Installing Mermaid editor..."
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pct exec $LXC_ID -- bash /root/mermaid-install.sh
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# === 4. Final summary ===
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IP=$(pct exec $LXC_ID -- hostname -I 2>/dev/null | cut -d' ' -f1)
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[[ -z "$IP" ]] && IP=$(pct exec $LXC_ID -- ip -4 addr show eth0 | grep -oP '(?<=inet\s)\d+(\.\d+){3}')
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log "✅ Mermaid Editor LXC ($LXC_ID) ready!"
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log "URL: ${BLUE}http://${IP}${NC}"
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log "Root password: ${YELLOW}$LXC_ROOT_PASSWORD${NC}"
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