only clone docs from gh-pages branch if they aren't there
Allow the caller of this script to decide which commit
from the gh-pages branch should be used to build the docs.
This also avoid excessive repeated git clones during development.
Change-Id: I3e58eef0ac03b15903c06d5632c0eb41413db02c
diff --git a/tools/build_docs.sh b/tools/build_docs.sh
index 216e557..1c145e2 100755
--- a/tools/build_docs.sh
+++ b/tools/build_docs.sh
@@ -91,8 +91,9 @@
# Assumption is we are now in the DevStack repo workspace to be processed
# Pull the latest docs branch from devstack.org repo
-rm -rf docs || true
-git clone -b gh-pages $GH_PAGES_REPO docs
+if ! [ -d docs ]; then
+ git clone -b gh-pages $GH_PAGES_REPO docs
+fi
# Build list of scripts to process
FILES=""