chore: add schell check at CI

.github/workflows/health-check.yml

@@ -18,3 +18,12 @@ jobs:
         uses: gitleaks/gitleaks-action@v2
         env:
           GITHUB_TOKEN: ${{ secrets.GH_TOKEN }}
+
+  ShellCheck:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out the repository code
+        uses: actions/checkout@v4
+
+      - name: Run ShellCheck
+        uses: ludeeus/action-shellcheck@master

Makefile

@@ -1,4 +1,4 @@
-.PHONY: help del ssh backup
+.PHONY: help del ssh backup check-scripts
 
 help: ## Show help.
 	@printf "A set of environment management commands.\n"
@@ -22,3 +22,7 @@ ssh: ## Copy the SSH public key to your clipboard.
 backup: ## Back up your applications list.
 	@echo "Backing up your applications list..."
 	@brew bundle dump --file=./brew/Brewfile --force
+
+check-scripts: ## Check the shell script.
+	@echo "Checking the shell script..."
+	@schellcheck *.sh

brew/Brewfile

@@ -7,6 +7,7 @@ tap "homebrew/services"
 # Essentials
 brew "stow"
 brew "git"
+brew "shellcheck"
 
 # Terminal
 brew "spaceship"