Dockerfile in rimless-1.6.0

- old
+ new

@@ -1,10 +1,10 @@
-FROM hausgold/ruby:2.5
+FROM hausgold/ruby:2.7
 MAINTAINER Hermann Mayer <hermann.mayer@hausgold.de>
 
 # Update system gem
-RUN gem update --system
+RUN gem update --system '3.4.22'
 
 # Add backports repository
 RUN echo 'deb http://archive.debian.org/debian buster-backports main' \
   >> /etc/apt/sources.list
 
@@ -16,10 +16,10 @@
   apt-get install -y \
     build-essential nodejs locales sudo vim \
     ca-certificates jq curl cmake \
     bash-completion inotify-tools && \
   echo 'en_US.UTF-8 UTF-8' >> /etc/locale.gen && /usr/sbin/locale-gen && \
-  gem install bundler --no-document --no-prerelease
+  gem install bundler -v '~> 2.4.22' --no-document --no-prerelease
 
 # Install kcat (formerly known as kafkacat)
 RUN curl -sL https://github.com/edenhill/kcat/archive/refs/tags/1.7.0.tar.gz \
   | tar xfvz - -C /tmp && cd /tmp/kcat-* && ./bootstrap.sh && \
   mv kcat /usr/local/bin && cd / && rm -rf /tmp/kcat-*