diff --git a/Dockerfile b/Dockerfile
index d01ab3f0..e2788f55 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -15,7 +15,7 @@ WORKDIR /build/web
 COPY web/package.json web/bun.lock ./
 COPY web/default/package.json ./default/package.json
 COPY web/classic/package.json ./classic/package.json
-RUN bun install --frozen-lockfile
+RUN bun install --filter ./classic --frozen-lockfile
 COPY ./web/classic ./classic
 COPY ./VERSION /build/VERSION
 RUN cd classic && VITE_REACT_APP_VERSION=$(cat /build/VERSION) bun run build