scripts/release.sh: make some tweaks

Signed-off-by: Cristian Staretu <[email protected]>

scripts/release.sh

@@ -4,8 +4,16 @@
 #  BUILD_VERSION - new version being released
 #  GITHUB_USER - contiv
 #  GITHUB_TOKEN - your github token
+#  USE_RELEASE - if 0 or not set, will make a pre-release
+
 cd -P -- "$(dirname -- "$0")"
 
+if [ -z "$(which github-release)" ]; then
+	echo "Please install github-release before running this script"
+	echo "You may download a release from https://github.com/aktau/github-release/releases or run 'go get github.com/aktau/github-release' if you have Go installed"
+	exit 1
+fi
+
 if [ -z "$BUILD_VERSION" ]; then
 	echo "A release requires BUILD_VERSION to be defined"
 	exit 1
@@ -19,7 +27,11 @@ fi
 if [ "$OLD_VERSION" != "none" ]; then
 	comparison="$OLD_VERSION..HEAD"
 fi
-pre_release="-p"
+
+if [ "$USE_RELEASE" != "1" ]; then
+	echo "Making a pre-release..."
+	pre_release="-p"
+fi
 
 if [ "$OLD_VERSION" != "none" ]; then
 	changelog=$(git log $comparison --oneline --no-merges --reverse)