deploy: add Dockerfile and docker-compose for nginx-based deployment

Multi-stage build (Node + nginx) to replace WordPress container.
Serves Vite SPA on port 10001 with client-side routing fallback.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: brian033

.dockerignore

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+node_modules
+dist
+.git

Dockerfile

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+FROM node:22-alpine AS build
+WORKDIR /app
+COPY package.json package-lock.json ./
+RUN npm ci
+COPY . .
+RUN npm run build
+
+FROM nginx:alpine
+COPY --from=build /app/dist /usr/share/nginx/html
+COPY nginx.conf /etc/nginx/conf.d/default.conf
+EXPOSE 80

docker-compose.yml

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+services:
+  web:
+    build: .
+    ports:
+      - "10001:80"
+    restart: always

nginx.conf

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+server {
+    listen 80;
+    root /usr/share/nginx/html;
+    index index.html;
+
+    location / {
+        try_files $uri $uri/ /index.html;
+    }
+
+    location /assets/ {
+        expires 1y;
+        add_header Cache-Control "public, immutable";
+    }
+}