refactor!: update dockerfile build

Dockerfile

@@ -10,16 +10,6 @@ FROM bun AS js-deps
 COPY package.json bun.lock /temp/dev/
 RUN cd /temp/dev && bun install --frozen-lockfile
 
-# copy node_modules from temp directory
-# then copy all (non-ignored) project files into the image
-FROM bun AS js-bundler
-COPY --from=js-deps /temp/dev/node_modules node_modules
-COPY frontend frontend
-COPY .devfiles/scripts/build-frontend.ts .devfiles/scripts/build-frontend.ts
-
-ENV NODE_ENV=production
-RUN bun ./.devfiles/scripts/build-frontend.ts
-
 # ── Rust ────────────────────────────────────────────────────────────────
 
 FROM rust:slim AS builder
@@ -36,9 +26,9 @@ RUN adduser \
   --uid 10001 \
   appuser
 
-COPY --from=js-bundler /usr/src/app/dist dist
-
 COPY . .
+COPY --from=js-deps /usr/local/bin/bun /usr/local/bin/bun
+COPY --from=js-deps /temp/dev/node_modules node_modules
 
 RUN --mount=type=cache,target=/app/target/ \
   --mount=type=cache,target=/usr/local/cargo/git/db \