[add] add basic nginx config

Dockerfile

@@ -0,0 +1,11 @@
+FROM oven/bun:1 AS build
+WORKDIR /app
+COPY package.json bun.lock ./
+RUN bun install --frozen-lockfile
+COPY . .
+RUN bun 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