feat(ci): add certbot deployment script with cloudflare dns support

ci/scripts/deploy-certbot.sh

@@ -0,0 +1,42 @@
+#!/bin/bash
+set -e
+
+# Usage: ./deploy-certbot.sh [domain1] [domain2] ...
+EMAIL="personal@ermnvldmr.com"
+CLOUDFLARE_INI="/etc/letsencrypt/cloudflare.ini"
+
+# Collect domains from arguments, fallback to default if none provided
+if [ $# -eq 0 ]; then
+    DOMAINS=("docs.ermnvldmr.com")
+else
+    DOMAINS=("$@")
+fi
+
+# Build domain arguments for certbot
+DOMAIN_ARGS=()
+for d in "${DOMAINS[@]}"; do
+    DOMAIN_ARGS+=("-d" "$d")
+done
+
+echo "Installing certbot and Cloudflare DNS plugin..."
+sudo apt-get update
+sudo apt-get install -y certbot python3-certbot-cloudflare
+
+if [ ! -f "$CLOUDFLARE_INI" ]; then
+    echo "Error: Cloudflare credentials file not found at $CLOUDFLARE_INI"
+    echo "Please ensure it exists and has 600 permissions."
+    exit 1
+fi
+
+echo "Requesting certificate for ${DOMAINS[*]} via Cloudflare DNS challenge..."
+sudo certbot certonly \
+  --dns-cloudflare \
+  --dns-cloudflare-credentials "$CLOUDFLARE_INI" \
+  "${DOMAIN_ARGS[@]}" \
+  --email "$EMAIL" \
+  --agree-tos \
+  --no-eff-email \
+  --non-interactive
+
+echo "Certificates for ${DOMAINS[*]} have been processed."
+