diff --git a/6.0/Containerfile b/6.0/Containerfile
index 4dead53..b9a19e0 100644
--- a/6.0/Containerfile
+++ b/6.0/Containerfile
@@ -41,7 +41,7 @@ RUN echo 'gem "sqlite3", "~>1.7.0", :require => true' >> Gemfile.local
 RUN echo 'gem "mysql2", "~> 0.5.0", :require => true' >> Gemfile.local
 RUN echo 'gem "pg", :require => true' >> Gemfile.local
 RUN echo 'gem "puma", :require => true' >> Gemfile.local
-
+RUN echo 'gem "with_advisory_lock", :require => true' >> Gemfile.local
 RUN gem install  --user-install bundler
 
 #
@@ -91,6 +91,9 @@ RUN bundle config set --local without 'development test'
 RUN bundle config set --local path '/home/redmine/.local/share/gem'
 RUN bundle install 
 
+# clean up all .git directories
+RUN find -name '.git' -exec rm -rf "{}" \; || true
+
 FROM docker.io/ruby:3.3-bookworm
 
 RUN apt-get -qy update && apt-get -qy upgrade
diff --git a/README.md b/README.md
index 844a7ed..700f92f 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,3 @@
----
-lang: EN_US
----
 
 # Redmine Container Image
 
@@ -8,6 +5,25 @@ lang: EN_US
 
 This repository contains the Containerfile and associated scripts for a container image that runs [Redmine](https://www.redmine.org/).
 
+The 5.1 Container image, at the moment still available under the :latest tag, is deprecated and only basic updates for redmine and operating system will be provided
+as long as my own kubernetes cluster is running. 
+
+Future work will only go into the Version 6 Container Image.
+
+The new Container Image (all tags starting with 6) is **not** based on the original Redmine Docker Image anymore. 
+I created the Container file from scratch using the ruby:3.3-bookworm image as a base.
+
+The Design goals for the Image are:
+
+- no root user, everything runs under a non-root user (default to redmine user) 
+- root filesystem can be mounted read-only (in kubernetes environment)
+- reproduceable restarts (no updates during start of the container, except database migrations)
+- easy integration with sidekiq and redis
+
+
+
+
+
 This Container Image is at the moment based on the original [Redmine Dockerfile](https://hub.docker.com/_/redmine)
 
 This image includes the following additional plugins: