Lint MarkDown and Terraform code (#3)

* Lint MarkDown and Terraform code

* Only run linting on PRs

* Ensure linting passes before being able to merge a PR

* Lint everything that super-linter can lint

Author: mattburgess

.github/workflows/linter.yml

@@ -0,0 +1,22 @@
+---
+name: Lint Code Base
+
+on:
+  pull_request:
+    branches: [main]
+
+jobs:
+  build:
+    name: Lint
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout Code
+        uses: actions/checkout@v2
+        with:
+          # Full git history is needed to get a proper list of changed files within `super-linter`
+          fetch-depth: 0
+      - name: Lint Code Base
+        uses: github/super-linter@v3
+        env:
+          DEFAULT_BRANCH: main
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

github.tf

@@ -39,7 +39,8 @@ resource "github_branch_protection" "main" {
   require_signed_commits = true
 
   required_status_checks {
-    strict = true
+    strict   = true
+    contexts = ["Lint"]
   }
 
   required_pull_request_reviews {