diff --git a/docker/Dockerfile b/docker/Dockerfile
index ad41be490a..2bc484ecfa 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -1,10 +1,13 @@
-ARG RUBY_VERSION
-FROM ruby:$RUBY_VERSION-alpine
+ARG RUBY_VERSION=3
+FROM ruby:${RUBY_VERSION}-alpine
 
 ENV BUNDLE_PATH /usr/local/bundle/gems
 ENV LIB_PATH /var/grape
+ENV RUBYOPT --enable-frozen-string-literal --yjit
+ENV LD_PRELOAD libjemalloc.so.2
+ENV MALLOC_CONF dirty_decay_ms:1000,narenas:2,background_thread:true
 
-RUN apk add --update --no-cache make gcc git libc-dev gcompat && \
+RUN apk add --update --no-cache make gcc git libc-dev gcompat jemalloc && \
     gem update --system && gem install bundler
 
 WORKDIR $LIB_PATH
diff --git a/docker/entrypoint.sh b/docker/entrypoint.sh
index b7674f2762..bc492f3958 100644
--- a/docker/entrypoint.sh
+++ b/docker/entrypoint.sh
@@ -13,4 +13,4 @@ else
 fi
 
 # Keep gems in the latest possible state
-(bundle check || bundle install) && bundle update && bundle exec ${@}
+(bundle check || bundle install) && bundle update && exec bundle exec ${@}