static export + nginx, drop runtime server

~800MiB -> ~5MiB RAM

Dockerfile

@@ -1,31 +1,14 @@
-FROM oven/bun:1 AS base
+FROM oven/bun:1 AS build
 WORKDIR /app
 
-FROM base AS install
-RUN mkdir -p /temp/dev
-COPY package.json bun.lock /temp/dev/
-RUN cd /temp/dev && bun install --frozen-lockfile
+COPY package.json bun.lock ./
+RUN bun install --frozen-lockfile
 
-RUN mkdir -p /temp/prod
-COPY package.json bun.lock /temp/prod/
-RUN cd /temp/prod && bun install --frozen-lockfile --production
-
-FROM base AS prerelease
-COPY --from=install /temp/dev/node_modules node_modules
 COPY . .
-
 ENV NODE_ENV=production
 RUN bun run build
 
-FROM base AS release
-
-COPY --from=prerelease /app/public ./public
-COPY --from=prerelease /app/.next ./.next
-COPY --from=prerelease /app/node_modules ./node_modules
-COPY --from=prerelease /app/package.json ./package.json
-
-USER bun
-EXPOSE 3000/tcp
-
-CMD ["bun", "run", "start"]
-
+FROM nginx:alpine
+COPY --from=build /app/out /usr/share/nginx/html
+COPY nginx.conf /etc/nginx/conf.d/default.conf
+EXPOSE 80