diff --git a/.github/workflows/blank.yml b/.github/workflows/blank.yml
deleted file mode 100644
index 7941b85..0000000
--- a/.github/workflows/blank.yml
+++ /dev/null
@@ -1,35 +0,0 @@
-# This is a basic workflow to help you get started with Actions
-
-name: CI
-
-# Controls when the action will run.
-on:
-  # Triggers the workflow on push or pull request events but only for the main branch
-  workflow_dispatch:
-    branches:
-      - main
-
-  # Allows you to run this workflow manually from the Actions tab
-  workflow_dispatch:
-
-# A workflow run is made up of one or more jobs that can run sequentially or in parallel
-jobs:
-  # This workflow contains a single job called "build"
-  build:
-    # The type of runner that the job will run on
-    runs-on: ubuntu-latest
-
-    # Steps represent a sequence of tasks that will be executed as part of the job
-    steps:
-      # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
-      - uses: actions/checkout@v2
-
-      # Runs a single command using the runners shell
-      - name: Run a one-line script
-        run: echo Hello, world!
-
-      # Runs a set of commands using the runners shell
-      - name: Run a multi-line script
-        run: |
-          echo Add other actions to build,
-          echo test, and deploy your project.
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 8b0dc22..7656aed 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -26,10 +26,8 @@ jobs:
           # docker_build_args: |
           #   NODE_ENV
           #   SECRET_KEY
-        # 这是为了heroku，注意前缀有个HD，但是再使用时候不是必须的。
-        env:
-          HD_UUID: "${{ secrets.HEROKU_V2RAY_UUID }}"
-        # 这是为了build docker image
         env:
+          # 这是为了heroku，注意前缀有个HD，这是为了告诉heroku-deploy，这些变量需要传入到container 中。
+          HD_UUID: ${{ secrets.HEROKU_V2RAY_UUID }} # UUID for v2ray user, 为了安全，一定要放入github action token中
           NODE_ENV: production
           SECRET_KEY: ${{ secrets.MY_SECRET_KEY }}