diff --git a/Dockerfile b/Dockerfile
index dbdbbd8..3bd81a9 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,6 +1,7 @@
 FROM "alpine:latest"
 LABEL maintainer="Julien Cabillot <dockerimages@cabillot.eu>"
 
+# hadolint ignore=DL3018
 RUN apk add --no-cache unrar && \
     rm -rf /usr/lib/ruby/gems/*/cache/* \
         /var/cache/apk/* \