diff --git a/lazyDir/centos7.Dockerfile b/lazyDir/centos7.Dockerfile
index f48c1f1..4dc1476 100644
--- a/lazyDir/centos7.Dockerfile
+++ b/lazyDir/centos7.Dockerfile
@@ -76,14 +76,15 @@
 # Create a symbolic link to latest JVM - for legacy scripts
 RUN mkdir /usr/java && ln -s /usr/lib/jvm/java-${jdk}-openjdk /usr/java/latest
 
-# Enable Ruby 2.6 for any later bash session
-RUN echo "#!/bin/bash" > "/usr/local/bin/withruby" \
-    && echo "export PATH=\${PATH}:\${HOME}/bin" >> "/usr/local/bin/withruby" \
-    && echo "source scl_source enable rh-ruby26" >> "/usr/local/bin/withruby" \
-    && echo 'exec "$@"' >> "/usr/local/bin/withruby" \
-    && chmod 0755 "/usr/local/bin/withruby"
+# Enable SCLs for any later bash session
+# The script can also be sourced if the entry-point is overwritten
+RUN echo "#!/usr/bin/env bash" > "/usr/local/bin/withscl" \
+    && echo 'if ! [[ "${PATH}" =~ "${HOME}/bin" ]]; then export PATH=${PATH}:${HOME}/bin; fi' >> "/usr/local/bin/withscl" \
+    && echo 'while read SCL; do source scl_source enable ${SCL}; done < <(scl --list)' >> "/usr/local/bin/withscl" \
+    && echo 'if [ "$(basename "${0}")" == "$(basename ${BASH_SOURCE[0]})" ]; then exec "$@"; fi' >> "/usr/local/bin/withscl" \
+    && chmod 0755 "/usr/local/bin/withscl"
 
-ENTRYPOINT [ "/usr/local/bin/withruby" ]
+ENTRYPOINT [ "/usr/local/bin/withscl" ]
 
 # Configure desired timezone
 ENV TZ=Europe/Amsterdam
@@ -105,10 +106,10 @@
 # Switch to non-root user and install requirements
 USER ${user}
 WORKDIR /home/${user}
-RUN /usr/local/bin/withruby gem install bundler --version `sed -n -r -e '/BUNDLED WITH/,$ { s/\s+([.0-9]+)/\1/ p }' Gemfile.lock`
-RUN /usr/local/bin/withruby bundler config --global path /home/${user}/.bundle/gems
-RUN /usr/local/bin/withruby bundler config --global bin /home/${user}/bin
-RUN /usr/local/bin/withruby bundler install
+RUN /usr/local/bin/withscl gem install bundler --version `sed -n -r -e '/BUNDLED WITH/,$ { s/\s+([.0-9]+)/\1/ p }' Gemfile.lock`
+RUN /usr/local/bin/withscl bundler config --global path /home/${user}/.bundle/gems
+RUN /usr/local/bin/withscl bundler config --global bin /home/${user}/bin
+RUN /usr/local/bin/withscl bundler install
 ENV GEM_PATH=/home/${user}/.gem/ruby:/home/${user}/.bundle/gems/ruby/2.6.0:/opt/rh/rh-ruby26/root/usr/share/gems
 
 # Prepare locales (for Jekyll)