fix: Dockerfile uses npm prune instead of npm ci for production deps

The run stage no longer runs npm ci --omit=dev (which fails when
package-lock.json and the Docker environment's resolved deps are
out of sync, e.g. @emnapi/* transitive deps from adapter-node).

Instead, the build stage runs npm prune --omit=dev after building,
and the run stage copies the already-pruned node_modules. This
avoids any lock file sync issues across different environments.

Dockerfile

@@ -9,16 +9,17 @@ RUN npm ci
 COPY . .
 RUN npm run build
 
+# Prune dev dependencies for the production image
+RUN npm prune --omit=dev
+
 # ---- Run stage ----
 FROM node:22-alpine AS run
 
 WORKDIR /app
 
-COPY package.json package-lock.json ./
+COPY --from=build /app/package.json ./
-RUN npm ci --omit=dev
+COPY --from=build /app/node_modules ./node_modules
-
 COPY --from=build /app/build ./build
-COPY --from=build /app/package.json .
 
 ENV PORT=3000
 ENV HOST=0.0.0.0