Fix installation script on MacOS (#1263)

Fixed #1254

and also add CI for installation script and shellcheck.

Signed-off-by: Jiahao XU <Jiahao_XU@outlook.com>

.github/workflows/shellcheck.yml

@@ -0,0 +1,32 @@
+name: Shellcheck
+
+on:
+  merge_group:
+  pull_request:
+    types:
+      - opened
+      - reopened
+      - synchronize
+    paths:
+      - '**.sh'
+  push:
+    branches:
+      - main
+    paths:
+      - '**.sh'
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref || github.event.pull_request.number || github.sha }}
+  cancel-in-progress: true
+
+jobs:
+  shellcheck:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v3
+    - uses: taiki-e/install-action@v2
+      with:
+        tool: fd-find
+    - name: shellcheck
+      run: fd -e sh -t f -X shellcheck