Create shellcheck.yml

.github/workflows/shellcheck.yml

@@ -0,0 +1,17 @@
+# This is a workflow to run shellcheck on all scripts
+name: Shellcheck Workflow
+
+# Controls when the action will run. Triggers the workflow on push or pull request 
+# events but only for the master branch
+on:
+  pull_request:
+    branches:
+      - master
+      - dev
+
+jobs:
+  shellcheck:
+    steps:
+      - uses: actions/checkout@v1
+      - name: Shell Linter
+        uses: azohra/shell-linter@v0.3.0