♻️ Serve frontend from FastAPI (#2393)

Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

backend/Dockerfile

@@ -1,3 +1,21 @@
+FROM oven/bun:1 AS frontend-build
+
+WORKDIR /app
+
+COPY package.json bun.lock /app/
+COPY frontend/package.json /app/frontend/
+
+WORKDIR /app/frontend
+
+RUN bun install
+
+COPY ./frontend /app/frontend
+
+ARG VITE_API_URL=
+
+RUN bun run build
+
+
 FROM python:3.14
 
 ENV PYTHONUNBUFFERED=1
@@ -33,6 +51,8 @@ COPY ./backend/pyproject.toml ./backend/alembic.ini /app/backend/
 
 COPY ./backend/app /app/backend/app
 
+COPY --from=frontend-build /app/backend/app/frontend /app/backend/app/frontend
+
 # Sync the project
 # Ref: https://docs.astral.sh/uv/guides/integration/docker/#intermediate-layers
 RUN --mount=type=cache,target=/root/.cache/uv \