diff --git a/actions-runner/Dockerfile b/actions-runner/Dockerfile
index 3436876..1c4cb31 100644
--- a/actions-runner/Dockerfile
+++ b/actions-runner/Dockerfile
@@ -7,6 +7,7 @@ RUN apt update && \
     apt install -y \
       ca-certificates \
       curl \
+      file \
       git
 
 USER runner