diff --git a/tests/infrastructure/scripts/run-integration.sh b/tests/infrastructure/scripts/run-integration.sh
index 2e67e17..5a749c0 100755
--- a/tests/infrastructure/scripts/run-integration.sh
+++ b/tests/infrastructure/scripts/run-integration.sh
@@ -47,7 +47,10 @@ REPO_ROOT="$(cd "$INFRA_DIR/../.." && pwd)"
 
 # ── Defaults ────────────────────────────────────────────────────────
 CACHE_DIR="${CACHE_DIR:-/opt/pve-integration}"
-WORK_DIR="${WORK_DIR:-${RUNNER_TEMP:-$CACHE_DIR/work}}"
+# Always use a path under CACHE_DIR (shared mount) so files are visible
+# to sibling Docker containers. Do NOT use RUNNER_TEMP — it's container-local
+# in CI and invisible to the Docker host.
+WORK_DIR="${WORK_DIR:-$CACHE_DIR/work}"
 CONFIG_FILE="${CONFIG_FILE:-$WORK_DIR/config.json}"
 MODULE_ARTIFACT="${MODULE_ARTIFACT:-$REPO_ROOT/publish/netstandard2.0}"
 PVE_VERSIONS="${PVE_VERSIONS:-9 8}"