Scaffold Docker-only Node 24 + TypeScript EJS web backend

Dockerfile

@@ -0,0 +1,16 @@
+# Node 24 runs TypeScript directly (type stripping) — no build step.
+# Pinned to an exact, human-readable version (node / alpine).
+FROM node:24.16.0-alpine3.24
+
+WORKDIR /app
+
+# Reproducible install from the committed lockfile. Dev deps (typescript, types)
+# are kept so `npm run typecheck` / `npm test` work in the same image.
+COPY package.json package-lock.json .npmrc ./
+RUN npm ci
+
+COPY . .
+
+ENV PORT=3000
+EXPOSE 3000
+CMD ["node", "src/server.ts"]