diff --git a/backend/Dockerfile.test-rust b/backend/Dockerfile.test-rust
index 9c8dfcf..4fc402d 100644
--- a/backend/Dockerfile.test-rust
+++ b/backend/Dockerfile.test-rust
@@ -6,7 +6,7 @@ WORKDIR /app
 FROM base AS planner
 RUN apt-get update && apt-get install -y --no-install-recommends pkg-config libssl-dev ca-certificates && rm -rf /var/lib/apt/lists/*
 RUN cargo install --locked cargo-chef
-COPY . .
+COPY backend/ .
 RUN cargo chef prepare --recipe-path recipe.json
 
 # Deps: compile only external crates