Initial caddy skill

Caddyfile

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+# Default Caddyfile - customize as needed
+:80 {
+    respond "VibeStack Agent - Caddy is running!"
+}

SKILL.md

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+---
+name: caddy
+description: Caddy web server with automatic HTTPS
+metadata:
+  version: "1.0.0"
+  vibestack:
+    main: false
+---
+
+# Caddy Skill
+
+Installs and configures [Caddy](https://caddyserver.com/) web server with automatic HTTPS.
+
+## Features
+
+- Automatic HTTPS with Let's Encrypt
+- Reverse proxy support
+- Static file serving
+- Zero-downtime reloads
+
+## Configuration
+
+Create a `Caddyfile` in your skill's directory or set `CADDYFILE_PATH` environment variable.
+
+### Environment Variables
+
+| Variable | Description | Default |
+|----------|-------------|---------|
+| `CADDYFILE_PATH` | Path to Caddyfile | `/skills/caddy/Caddyfile` |
+| `CADDY_DATA_DIR` | Caddy data directory | `/data/caddy` |
+
+## Example Caddyfile
+
+```caddyfile
+:80 {
+    respond "Hello from Caddy!"
+}
+
+# Reverse proxy example
+# api.example.com {
+#     reverse_proxy localhost:8080
+# }
+```
+
+## Usage
+
+This skill is typically used as a dependency by other skills that need a web server:
+
+```yaml
+metadata:
+  vibestack:
+    requires:
+      - caddy
+```

scripts/autorun.sh

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+#!/bin/bash
+set -e
+
+# Idempotent Caddy installation
+install_caddy() {
+    if command -v caddy &>/dev/null; then
+        echo "caddy already installed: $(caddy version)"
+        return 0
+    fi
+
+    echo "Installing Caddy..."
+
+    # Install dependencies
+    apt-get update
+    apt-get install -y debian-keyring debian-archive-keyring apt-transport-https curl
+
+    # Add Caddy GPG key and repository
+    curl -1sLf 'https://dl.cloudsmith.io/public/caddy/stable/gpg.key' | gpg --dearmor -o /usr/share/keyrings/caddy-stable-archive-keyring.gpg
+    curl -1sLf 'https://dl.cloudsmith.io/public/caddy/stable/debian.deb.txt' | tee /etc/apt/sources.list.d/caddy-stable.list
+
+    # Install Caddy
+    apt-get update
+    apt-get install -y caddy
+
+    echo "Caddy installed: $(caddy version)"
+}
+
+# Create data directory
+setup_dirs() {
+    local data_dir="${CADDY_DATA_DIR:-/data/caddy}"
+    mkdir -p "$data_dir"
+    echo "Caddy data directory: $data_dir"
+}
+
+install_caddy
+setup_dirs

scripts/run.sh

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+#!/bin/bash
+set -e
+
+CADDYFILE_PATH="${CADDYFILE_PATH:-/skills/caddy/Caddyfile}"
+CADDY_DATA_DIR="${CADDY_DATA_DIR:-/data/caddy}"
+
+if [ ! -f "$CADDYFILE_PATH" ]; then
+    echo "Error: Caddyfile not found at $CADDYFILE_PATH"
+    exit 1
+fi
+
+echo "Starting Caddy with config: $CADDYFILE_PATH"
+exec caddy run --config "$CADDYFILE_PATH" --adapter caddyfile