Try to avoid overwriting app

Author: robbibt

.github/workflows/dea-intertidal-image.yml

@@ -101,9 +101,9 @@ jobs:
             --env AWS_ACCESS_KEY_ID \
             --env AWS_SECRET_ACCESS_KEY \
             --env AWS_SESSION_TOKEN \
-            --volume ${GITHUB_WORKSPACE}:/app \
+            --volume ${GITHUB_WORKSPACE}/tests:/app/tests \
             --volume ${GITHUB_WORKSPACE}/tide_models:/var/share/tide_models \
-            dea_intertidal uv run --venv .venv pytest -v --cov=intertidal --cov-report=xml tests
+            dea_intertidal uv run pytest -v --cov=intertidal --cov-report=xml tests
 
       # Commit validation results produced by integration tests back into repo
       # (relies on having previously added a volume to access outputs outside of the container)