add option to generate only api or only docs

docs/_bin/deploy-docs.sh

@@ -1,5 +1,24 @@
 #!/bin/bash -e
 
+opt_api=1
+while getopts ":adn" opt; do
+  case $opt in
+    n)
+      opt_dryrun="1"
+      ;;
+    d)
+      opt_api=
+      ;;
+    a)
+      opt_docs=
+      ;;
+    \?)
+      echo "Invalid option: -$OPTARG" >&2
+      ;;
+  esac
+done
+shift $((OPTIND-1))
+
 if [ -z "$1" ]; then 
     version="latest"
 else
@@ -35,11 +54,13 @@ git clone -q --depth 1 git@github.com:druid-io/druid-io.github.io.git "$target"
 remote=$(git -C "$druid" config --local --get remote.origin.url)
 git clone -q --depth 1 --branch $branch $remote "$src"
 
+if [ -n "$opt_docs" ] ; then
   mkdir -p $target/docs/$version
   rsync -a --delete "$src/docs/content/" $target/docs/$version
+fi
 
 # generate javadocs for releases (not for master)
-if [ "$version" != "latest" ] ; then
+if [ "$version" != "latest" ] && [ -n "$opt_api" ] ; then
   (cd $src && mvn javadoc:aggregate)
   mkdir -p $target/api/$version
   rsync -a --delete "$src/target/site/apidocs/" $target/api/$version
@@ -50,6 +71,7 @@ updatebranch=update-docs-$version
 git -C $target checkout -b $updatebranch
 git -C $target add -A .
 git -C $target commit -m "Update $version docs"
+if [ -z "$opt_dryrun" ]; then
   git -C $target push origin $updatebranch
 
   if [ -n "$GIT_TOKEN" ]; then
@@ -68,3 +90,7 @@ else
   fi
 
   rm -rf $tmp
+else
+  echo "Not pushing. To see changes run:"
+  echo "git -C $target diff HEAD^1"
+fi