Fix multi-stage container build

Dockerfile

@@ -24,13 +24,12 @@ COPY . .
 # [optional] tests & build
 ENV NODE_ENV=production
 # RUN bun test
-# RUN bun run build
+RUN bun build --target bun --outdir build index.ts
 
 # copy production dependencies and source code into final image
 FROM base AS release
 COPY --from=install /temp/prod/node_modules node_modules
 COPY --from=prerelease /usr/src/app/build/index.js .
-COPY --from=prerelease /usr/src/app/package.json .
 
 # run the app
 USER bun