discourse update: add symlink for .ruby-version

updates/discourse.sh

@@ -16,12 +16,6 @@ echo
 basedir=$HOME/discourse
 services="sidekiq discourse"
 patch=$HOME/latest.patch
-# not clear why this is a samplefile
-# they seem to do this by hand on the docker repo
-rubyver=$(< $basedir/.ruby-version.sample)
-# commenting this because we assume that upstream docker
-# uses newer ruby because they don't seem to use release
-#rubyver=$(curl -s https://raw.githubusercontent.com/discourse/discourse_docker/main/image/base/slim.Dockerfile | grep -oP '(?<=RUBY_VERSION=)[0-9]+\.[0-9]+\.[0-9]+')
 nodever=$(curl -s https://raw.githubusercontent.com/discourse/discourse_docker/main/image/base/slim.Dockerfile | grep -oP '(?<=nodesource.com/setup_)[0-9]+[0-9]')
 
 cd $basedir
@@ -39,7 +33,14 @@ git stash apply
 #[ -e $patch ] && . $patch
 #echo "command ended with status $?"
 
-#echo ~/.rbenv/versions/$rubyver
+# not clear why this is a samplefile
+# they seem to do this by hand on the docker repo
+rubyver=$(< $basedir/.ruby-version.sample)
+# commenting this because we assume that upstream docker
+# uses newer ruby because they don't seem to use release
+#rubyver=$(curl -s https://raw.githubusercontent.com/discourse/discourse_docker/main/image/base/slim.Dockerfile | grep -oP '(?<=RUBY_VERSION=)[0-9]+\.[0-9]+\.[0-9]+')
+
+[ ! -L $basedir/.ruby-version ] && ln -sv $basedir/.ruby-version.sample $basedir/.ruby-version
 
 if [[ ! -e ~/.rbenv/versions/$rubyver ]]
 then