diff --git a/action.yml b/action.yml
index 824b65e..ba1113a 100644
--- a/action.yml
+++ b/action.yml
@@ -49,6 +49,7 @@ inputs:
     required: false
     default: 'ord'
 runs:
+  using: 'docker'
   image: 'Dockerfile'
   run: echo "FLY_APP_NAME=$(printf ${{ inputs.fly-app-name }} | tr '/' '_')" >> $GITHUB_ENV
   env: