fix(install): lite deploy for small VPS disks

Run Postgres/Redis in Docker and build Next.js on host to avoid
image build exhausting 10GB root volumes.

Co-authored-by: Cursor <cursoragent@cursor.com>

install.sh

@@ -1,10 +1,11 @@
 #!/usr/bin/env bash
-# Domain Scanner — one-command VPS install (Docker Compose + nginx)
+# Domain Scanner — VPS install (Postgres/Redis in Docker, Next.js on host)
+# Full `docker compose up` (web image) needs ~4GB free disk; this script uses the lite path.
 set -euo pipefail
 
 REPO_URL="${DOMAIN_SCANNER_REPO_URL:-https://github.com/andrey271192/Domain_web.git}"
 BRANCH="${DOMAIN_SCANNER_BRANCH:-main}"
-INSTALL_DIR="${DOMAIN_SCANNER_INSTALL_DIR:-/opt/domain_web}"
+INSTALL_DIR="${DOMAIN_SCANNER_INSTALL_DIR:-/opt/domain-scanner}"
 SERVICE_NAME="domain-scanner"
 NGINX_SITE="domain-scanner"
 APP_PORT="${DOMAIN_SCANNER_PORT:-3000}"
@@ -27,16 +28,26 @@ install_packages() {
   apt-get install -y -qq curl ca-certificates git nginx openssl >/dev/null
 }
 
+install_node() {
+  if command -v node >/dev/null 2>&1 && [[ "$(node -p 'process.versions.node.split(".")[0]')" -ge 20 ]]; then
+    log "Node $(node -v) already installed"
+    return
+  fi
+  log "Installing Node.js 22..."
+  curl -fsSL https://deb.nodesource.com/setup_22.x | bash -
+  apt-get install -y -qq nodejs >/dev/null
+}
+
 install_docker() {
   if command -v docker >/dev/null 2>&1 && docker compose version >/dev/null 2>&1; then
     log "Docker already installed"
-    return
+  else
+    log "Installing Docker..."
+    curl -fsSL https://get.docker.com | sh
   fi
-  log "Installing Docker..."
-  curl -fsSL https://get.docker.com | sh
-  systemctl enable docker.socket docker.service
-  systemctl start docker.socket
-  systemctl start docker.service
+  systemctl enable docker.socket docker.service 2>/dev/null || true
+  systemctl start docker.socket 2>/dev/null || true
+  systemctl start docker.service 2>/dev/null || true
 }
 
 stop_legacy() {
@@ -46,6 +57,7 @@ stop_legacy() {
   rm -f "/etc/systemd/system/${LEGACY_SERVICE}.service"
   rm -f "/etc/nginx/sites-enabled/${LEGACY_NGINX}"
   rm -f "/etc/nginx/sites-available/${LEGACY_NGINX}"
+  rm -rf /opt/domain_web 2>/dev/null || true
   systemctl daemon-reload 2>/dev/null || true
 }
 
@@ -73,35 +85,64 @@ setup_env() {
   sed -i "s|^NEXTAUTH_SECRET=.*|NEXTAUTH_SECRET=${secret}|" .env
   sed -i "s|^NEXTAUTH_URL=.*|NEXTAUTH_URL=http://${ip}|" .env
   sed -i "s|^NEXT_PUBLIC_APP_URL=.*|NEXT_PUBLIC_APP_URL=http://${ip}|" .env
-  export PORT="${APP_PORT}"
+  sed -i "s|^DATABASE_URL=.*|DATABASE_URL=postgresql://scanner:scanner@127.0.0.1:5432/domain_scanner?schema=public|" .env
+  sed -i "s|^REDIS_URL=.*|REDIS_URL=redis://127.0.0.1:6379|" .env
 }
 
-deploy_compose() {
+deploy_data_services() {
+  log "Starting Postgres and Redis (Docker)..."
   cd "${INSTALL_DIR}"
-  export PORT="${APP_PORT}"
-  AVAIL_KB=$(df -k "${INSTALL_DIR}" | awk 'NR==2 {print $4}')
-  if [[ "${AVAIL_KB:-0}" -lt 2500000 ]]; then
-    log "Low disk — Node-native deploy..."
-    bash "${INSTALL_DIR}/scripts/install-node.sh"
-    return
-  fi
-  log "Building Docker stack..."
-  if docker compose version >/dev/null 2>&1; then
-    if ! docker compose build 2>&1; then
-      log "Docker build failed — Node-native deploy..."
-      bash "${INSTALL_DIR}/scripts/install-node.sh"
-      return
+  docker compose up -d postgres redis
+  for i in $(seq 1 30); do
+    if docker compose exec -T postgres pg_isready -U scanner -d domain_scanner >/dev/null 2>&1; then
+      break
     fi
-    docker compose up -d
-    docker compose exec -T web npx prisma db push
-  else
-    if ! docker-compose build 2>&1; then
-      bash "${INSTALL_DIR}/scripts/install-node.sh"
-      return
-    fi
-    docker-compose up -d
-    docker-compose exec -T web npx prisma db push
-  fi
+    sleep 2
+  done
+}
+
+build_app() {
+  log "Building Next.js app on host..."
+  cd "${INSTALL_DIR}"
+  export NODE_ENV=production
+  npm ci
+  npx prisma generate
+  npx prisma db push
+  npm run build
+  rm -rf node_modules
+  npm ci --omit=dev
+  npx prisma generate
+  cp -r .next/static .next/standalone/.next/static
+  cp -r public .next/standalone/public
+  journalctl --vacuum-size=80M 2>/dev/null || true
+  apt-get clean 2>/dev/null || true
+}
+
+install_systemd() {
+  log "Installing systemd unit (${SERVICE_NAME})..."
+  cat >"/etc/systemd/system/${SERVICE_NAME}.service" <<EOF
+[Unit]
+Description=Domain Scanner (Next.js)
+After=network.target docker.service
+Wants=docker.service
+
+[Service]
+Type=simple
+WorkingDirectory=${INSTALL_DIR}/.next/standalone
+EnvironmentFile=${INSTALL_DIR}/.env
+Environment=HOSTNAME=0.0.0.0
+Environment=PORT=${APP_PORT}
+Environment=NODE_ENV=production
+ExecStart=/usr/bin/node server.js
+Restart=on-failure
+RestartSec=5
+
+[Install]
+WantedBy=multi-user.target
+EOF
+  systemctl daemon-reload
+  systemctl enable "${SERVICE_NAME}.service"
+  systemctl restart "${SERVICE_NAME}.service"
 }
 
 install_nginx() {
@@ -138,10 +179,14 @@ EOF
 
 verify() {
   log "Verifying deployment..."
-  sleep 5
+  sleep 4
+  if ! systemctl is-active --quiet "${SERVICE_NAME}.service"; then
+    systemctl status "${SERVICE_NAME}.service" --no-pager || true
+    journalctl -u "${SERVICE_NAME}.service" -n 30 --no-pager || true
+    exit 1
+  fi
   if ! curl -fsS -o /dev/null "http://127.0.0.1:${APP_PORT}/api/health"; then
-    echo "App health check failed on port ${APP_PORT}" >&2
-    cd "${INSTALL_DIR}" && docker compose logs --tail=40 web 2>/dev/null || true
+    echo "Health check failed on port ${APP_PORT}" >&2
     exit 1
   fi
   local title
@@ -150,22 +195,21 @@ verify() {
     echo "ERROR: GeoExport mirror still served — aborting" >&2
     exit 1
   fi
-  if ! curl -fsS -o /dev/null "http://127.0.0.1/"; then
-    echo "nginx not serving on :80" >&2
-    exit 1
-  fi
   local ip
   ip="$(hostname -I | awk '{print $1}')"
   log "Done. Domain Scanner: http://${ip}/"
-  log "Title check: ${title:-ok}"
+  log "Title: ${title:-Domain Scanner}"
 }
 
 need_root
 install_packages
+install_node
 install_docker
 stop_legacy
 clone_or_update
 setup_env
-deploy_compose
+deploy_data_services
+build_app
+install_systemd
 install_nginx
 verify