diff --git a/.github/workflows/sub-image-check.yml b/.github/workflows/sub-image-check.yml
index cad208c..3ccea62 100644
--- a/.github/workflows/sub-image-check.yml
+++ b/.github/workflows/sub-image-check.yml
@@ -38,11 +38,10 @@ jobs:
           cargo build --release --target aarch64-unknown-linux-gnu
           cargo build --release --target x86_64-unknown-linux-gnu
 
-          mkdir /tmp/sub-image/arm64 -p
-          mkdir /tmp/sub-image/amd64 -p
+          mkdir ./tmp
 
-          cp target/x86_64-unknown-linux-gnu/release/sub-image /tmp/sub-image/amd64/sub-image
-          cp target/aarch64-unknown-linux-gnu/release/sub-image /tmp/sub-image/arm64/sub-image
+          cp target/x86_64-unknown-linux-gnu/release/sub-image ./tmp/amd64
+          cp target/aarch64-unknown-linux-gnu/release/sub-image ./tmp/arm64
       - name: Build image
         if: github.ref_name == 'main'
         uses: ./.github/actions/build
diff --git a/.gitignore b/.gitignore
index 5798932..f15a241 100644
--- a/.gitignore
+++ b/.gitignore
@@ -152,3 +152,5 @@ docker-compose.yml
 
 test_results/*
 !test_results/.gitkeep
+
+sub-image/tmp
diff --git a/sub-image/Dockerfile b/sub-image/Dockerfile
index 677c955..cc6a3f0 100644
--- a/sub-image/Dockerfile
+++ b/sub-image/Dockerfile
@@ -1,6 +1,6 @@
 FROM ubuntu:22.04
 ARG TARGETARCH
-COPY /tmp/sub-image/${TARGETARCH}/sub-image /app/sub-image
+COPY ./tmp/${TARGETARCH} /app/sub-image
 
 WORKDIR /app
 ENTRYPOINT ["/app/sub-image"]