fix(deploy): fallback to npm install when lockfile missing in Dockerfiles

deploy/Dockerfile.frontend

@@ -1,7 +1,8 @@
 FROM node:20-alpine AS builder
 WORKDIR /app
 COPY frontend/package*.json ./
-RUN npm ci
+# Use npm ci when lockfile exists, fallback to npm install
+RUN sh -c 'if [ -f package-lock.json ] || [ -f npm-shrinkwrap.json ]; then npm ci; else npm install; fi'
 COPY frontend/ ./
 RUN npm run build --prefix frontend