feat(docker): add production-ready container deployment

Dockerfile

@@ -0,0 +1,37 @@
+# syntax=docker/dockerfile:1.7
+
+FROM node:22-alpine AS builder
+
+WORKDIR /app
+
+ENV HUSKY=0
+
+COPY package.json package-lock.json ./
+RUN npm ci
+
+COPY . .
+
+ARG MENAV_ENABLE_SYNC=false
+ARG MENAV_IMPORT_BOOKMARKS=false
+
+RUN if [ "${MENAV_IMPORT_BOOKMARKS}" = "true" ]; then \
+      MENAV_BOOKMARKS_DETERMINISTIC=1 npm run import-bookmarks; \
+    fi \
+    && if [ "${MENAV_ENABLE_SYNC}" = "true" ]; then \
+      npm run build; \
+    else \
+      PROJECTS_ENABLED=false HEATMAP_ENABLED=false RSS_ENABLED=false npm run build; \
+    fi
+
+FROM nginx:1.27-alpine AS runtime
+
+WORKDIR /usr/share/nginx/html
+
+COPY docker/nginx/default.conf /etc/nginx/conf.d/default.conf
+COPY --from=builder /app/dist ./
+
+EXPOSE 80
+
+STOPSIGNAL SIGQUIT
+
+CMD ["nginx", "-g", "daemon off;"]