fix Ruby install for high amount of CPU cores in host (#1085)

CHANGELOG.md

@@ -2,7 +2,7 @@
 
 ## Unreleased
 
-
+- Fix Ruby installation with high amount of CPU cores ([#1084](https://github.com/opendevstack/ods-quickstarters/issues/1084))
 - Update OS packages by default and bump gitleaks version ([#1049](https://github.com/opendevstack/ods-quickstarters/issues/1049))
 - Install java 17 devel only in scala and jdk agents ([#1057](https://github.com/opendevstack/ods-quickstarters/pull/1057))
 - Update Angular, Ionic and Typescript Quickstarters ([#1033](https://github.com/opendevstack/ods-quickstarters/issues/1033))

common/jenkins-agents/terraform-2306/docker/Dockerfile.ubi8

@@ -177,7 +177,7 @@ RUN cd /opt \
     && git clone https://github.com/rbenv/ruby-build.git /opt/rbenv/plugins/ruby-build \
     && echo 'export PATH="/opt/rbenv/plugins/ruby-build/bin:$PATH"' >> ~/.bash_profile \
     && source ~/.bash_profile \
-    && rbenv install $RUBY_VERSION \
+    && MAKE_OPTS='-j 4' rbenv install $RUBY_VERSION \
     && rbenv global $RUBY_VERSION \
     && gem install bundler -v $BUNDLER_VERSION \
     && RBENV_VERSION=$RUBY_VERSION gem install bundler -v $BUNDLER_VERSION \

common/jenkins-agents/terraform-2408/docker/Dockerfile.ubi8

@@ -193,7 +193,7 @@ RUN cd /opt \
     && git clone https://github.com/rbenv/ruby-build.git /opt/rbenv/plugins/ruby-build \
     && echo 'export PATH="/opt/rbenv/plugins/ruby-build/bin:$PATH"' >> ~/.bash_profile \
     && source ~/.bash_profile \
-    && rbenv install $RUBY_VERSION \
+    && MAKE_OPTS='-j 4' rbenv install $RUBY_VERSION \
     && rbenv global $RUBY_VERSION \
     && gem install bundler -v $BUNDLER_VERSION \
     && RBENV_VERSION=$RUBY_VERSION gem install bundler -v $BUNDLER_VERSION \