feat: deploy metrics-server (#56)

* chore: update readme to not deploy metrics-server

* feat: add metrics-server kustomization

* feat: enable metrics server

* Update kustomization.yaml

* Update kustomization.yaml

* Update and rename lint.yaml to lint-markdown.yaml

* Create lint-shell.yaml

* Create lint.yaml

.github/workflows/lint-shell.yaml

@@ -0,0 +1,27 @@
+---
+name: Lint Shell scripts on Pull Requests
+
+on: # yamllint disable-line rule:truthy
+  pull_request:
+    paths:
+      - "**.sh"
+
+jobs:
+  shellcheck:
+    runs-on: ubuntu-20.04
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+      - name: Get changes
+        uses: dorny/paths-filter@v2
+        id: filter
+        with:
+          list-files: shell
+          filters: |
+            shell:
+              - added|modified: "**.sh"
+      - name: Lint files
+        if: ${{ steps.filter.outputs.shell == 'true' }}
+        uses: reviewdog/action-shellcheck@v1
+        with:
+          shellcheck_flags: "${{ steps.filter.outputs.shell_files }}"