Try something different

.github/workflows/check.yml

@@ -1,6 +1,9 @@
 name: check
 on: [push]
-# can't use `env` since it doesn't work in e2e.steps[0].uses
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: ${{ github.repository }}/e2e
+  BRANCH_NAME: ${{ github.head_ref || github.ref_name }}
 jobs:
   lint:
     runs-on: ubuntu-22.04
@@ -24,15 +27,15 @@ jobs:
       - name: Log in to the Container registry
         uses: docker/login-action@v3
         with:
-          registry: ghcr.io
+          registry: ${{ env.REGISTRY }}
           username: ${{ github.actor }}
           password: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Extract metadata (tags, labels) for Docker
         id: meta
         uses: docker/metadata-action@v5
         with:
-          images: ghcr.io/${{ github.repository }}/e2e
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
 
       - name: Build and push Docker image
         uses: docker/build-push-action@v6
@@ -47,5 +50,6 @@ jobs:
   e2e:
     runs-on: ubuntu-22.04
     needs: build-and-push-image
+    container: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ env.BRANCH_NAME }}
     steps:
-      - uses: docker://ghcr.io/${{ github.repository }}/e2e:${{ github.head_ref || github.ref_name }}
+      - run: /urbanstats/test-ci.sh

react/test/Dockerfile

@@ -22,4 +22,4 @@ RUN apt-get -y install libx11-6:i386
 RUN apt-get -y install fluxbox
 
 COPY ./ ./
-CMD /urbanstats/test-ci.sh
+ENTRYPOINT [ "/bin/bash" ]