diff --git a/dockerfile b/dockerfile
index 4878406..5a9deaa 100644
--- a/dockerfile
+++ b/dockerfile
@@ -11,11 +11,12 @@ org.opencontainers.image.title=buildimage
 
 # editorconfig-checker-disable
 
-RUN apt update \
- && apt install --assume-yes --no-install-recommends --quiet \
+RUN apt-get --quiet update \
+ && apt-get install --assume-yes --no-install-recommends --quiet \
         build-essential \
         dpkg-sig \
         git \
+        ripgrep \
  && find /var/lib/apt -type f -delete
 
 # editorconfig-checker-enable