diff --git a/Dockerfile b/Dockerfile
index 83243ec..aedd710 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -2,13 +2,20 @@ FROM ruby:3.1.1-slim
 
 RUN apt-get update && apt-get install -y --no-install-recommends \
     build-essential \
+    gnupg2 \
+    curl \
+    less \
+    git \
     libpq-dev \
     postgresql-client \
-    git \
   && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
 
+ENV LANG=C.UTF-8 \
+  BUNDLE_JOBS=4 \
+  BUNDLE_RETRY=3
+  
 RUN gem update --system
-RUN gem install bundler:2.3.8
+RUN gem install bundler
 
 WORKDIR /usr/src/app