diff --git a/deploy/Dockerfile.backend b/deploy/Dockerfile.backend
index 90ccb70..eb1cdf7 100644
--- a/deploy/Dockerfile.backend
+++ b/deploy/Dockerfile.backend
@@ -10,6 +10,7 @@ COPY . .
 RUN uv sync --locked --no-dev
 
 FROM base AS check
+COPY --from=project-scripts . /scripts/
 RUN uv sync --locked && uv run pytest && uvx ruff==0.14.14 check --select F,E9,B src tests
 
 FROM base AS browser-download
diff --git a/scripts/ci.py b/scripts/ci.py
index bca98d9..50fc4a8 100644
--- a/scripts/ci.py
+++ b/scripts/ci.py
@@ -216,7 +216,8 @@ def check():
     save(ROOT / 'build.json', build)
     for part in IMAGES:
         print('Checking ' + part, flush=True)
-        run('docker', 'build', '--provenance=false', '--platform', 'linux/amd64', '--target', 'check',
+        contexts = ['--build-context', f'project-scripts={ROOT / "scripts"}'] if part == 'backend' else []
+        run('docker', 'build', *contexts, '--provenance=false', '--platform', 'linux/amd64', '--target', 'check',
             '-f', ROOT / f'deploy/Dockerfile.{part}', ROOT / part)
         reused = existing_image(part, build)
         local = reused or 'alphapulse-ci:' + label + '-' + part