Fix Docker install for Coolify Node Alpine.

Use npm install with the repo npmrc so the lockfile generated on npm 11 installs cleanly during the image build.

Dockerfile

@@ -1,7 +1,7 @@
 FROM node:22-alpine AS build
 WORKDIR /app
-COPY package.json package-lock.json* ./
-RUN npm ci
+COPY package.json package-lock.json .npmrc ./
+RUN npm install --legacy-peer-deps
 COPY . .
 RUN npm run build