bug: respect 'install_only' action input value (#147)

Signed-off-by: Mateusz Szostok <szostok.mateusz@gmail.com>

Author: mszostok

action.yml

@@ -56,6 +56,7 @@ inputs:
     default: "false"
   install_only:
     description: "Skips cluster creation, only install kind (default: false)"
+    default: "false"
     required: false
   ignore_failed_clean:
     description: "Whether to ignore the post-delete the cluster (default: false)"

main.sh

@@ -58,7 +58,7 @@ main() {
     fi
 
     if [[ -n "${INPUT_INSTALL_ONLY:-}" ]]; then
-        args+=(--install-only)
+        args+=(--install-only "${INPUT_INSTALL_ONLY}")
     fi
 
     if [[ -n "${INPUT_REGISTRY:-}" ]]; then