Tweak render build script

Author: rlskoeser

render-build.sh

@@ -2,20 +2,32 @@
 
 # save as render-build.sh and make sure it's executable
 # update the version being used to match version being used in build
+
 hugo version # Output the OLD version
-if [[! -f $XDG_CACHE_HOME/hugo]]; then 
-  echo "...Downloading HUGO" 
-  mkdir -p ~/tmp 
-  wget -P ~/tmp https://github.com/gohugoio/hugo/releases/download/v0.142.0/hugo_0.142.0_Linux-64bit.tar.gz 
+
+HUGO_VERSION=0.142.0
+OS_VERSION="Linux-64bit"
+#OS_VERSION="darwin-universal"  # uncomment to test on mac osx
+
+if [[ ! -f $XDG_CACHE_HOME/hugo ]]; then
+  echo "...Downloading HUGO"
+  mkdir -p ~/tmp
+  wget -P ~/tmp https://github.com/gohugoio/hugo/releases/download/v${HUGO_VERSION}/hugo_${HUGO_VERSION}_${OS_VERSION}.tar.gz
   cd ~/tmp
-  echo "...Extracting HUGO" 
-  tar -xzvf hugo_0.142.0_Linux-64bit.tar.gz
+  echo "...Extracting HUGO"
+  tar -xzvf hugo_${HUGO_VERSION}_${OS_VERSION}.tar.gz
   echo "...Moving HUGO"
-  mv hugo $XDG_CACHE_HOME/hugo  
+  mv hugo $XDG_CACHE_HOME/hugo
   cd $HOME/project/src # Make sure we return to where we were
-else 
+else
   echo "...Using HUGO from build cache"
 fi
 
 $XDG_CACHE_HOME/hugo version # Output the NEW version
-$XDG_CACHE_HOME/hugo --gc --minify`
+
+# Render sets IS_PULL_REQUEST to true for PR previews.
+if [ "${IS_PULL_REQUEST:-}" = "true" ]; then
+    $XDG_CACHE_HOME/hugo --gc -e preview
+else
+    $XDG_CACHE_HOME/hugo --gc --minify -b https://dh-tech.onrender.com/
+fi