diff --git a/Dockerfile b/Dockerfile
index c451e73..cc11920 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -24,6 +24,7 @@ RUN \
     zip \
     zlib-dev && \
   apk add --update --no-cache \
+    file \
     libjpeg \
     libxslt \
     nodejs \
diff --git a/Dockerfile.aarch64 b/Dockerfile.aarch64
index ddc6961..aeae884 100644
--- a/Dockerfile.aarch64
+++ b/Dockerfile.aarch64
@@ -24,6 +24,7 @@ RUN \
     zip \
     zlib-dev && \
   apk add --update --no-cache \
+    file \
     libjpeg \
     libxslt \
     nodejs \