Import source: Dockerfile

Import the existing local project snapshot. This commit organizes existing files; it does not represent newly developed functionality.

Dockerfile

@@ -0,0 +1,11 @@
+FROM node:22-bookworm
+
+WORKDIR /app
+
+COPY package*.json ./
+RUN npm ci
+
+COPY . .
+
+ENV PORT=3000
+CMD ["npm", "start"]