Add yamllint (#521)

.github/labeler.yml

@@ -1,30 +1,31 @@
 change:
-  - head-branch: ['^change/']
+  - head-branch: ["^change/"]
 
 enhancement:
-  - head-branch: ['^feature/', '^feat/', '^enhancement/', '^enh/']
+  - head-branch: ["^feature/", "^feat/", "^enhancement/", "^enh/"]
 
 bug:
-  - head-branch: ['^fix/', '^bug/']
+  - head-branch: ["^fix/", "^bug/"]
 
 chore:
-  - head-branch: ['^chore/']
+  - head-branch: ["^chore/"]
 
 tests:
-- any:
-  - head-branch: ['^tests/', '^test/']
-  - changed-files:
-      - any-glob-to-any-file: 'tests/**/*'
-- all:
-  - changed-files:
-      - all-globs-to-all-files: ['!tests/requirements.txt']
+  - any:
+      - head-branch: ["^tests/", "^test/"]
+      - changed-files:
+          - any-glob-to-any-file: "tests/**/*"
+  - all:
+      - changed-files:
+          - all-globs-to-all-files: ["!tests/requirements.txt"]
 
 documentation:
-  - head-branch: ['^docs/', '^doc/']
+  - head-branch: ["^docs/", "^doc/"]
   - changed-files:
-    - any-glob-to-any-file: '**/*.md'
+      - any-glob-to-any-file: "**/*.md"
 
 dependencies:
-  - head-branch: ['^deps/', '^dep/', '^dependabot/', 'pre-commit-ci-update-config']
+  - head-branch:
+      ["^deps/", "^dep/", "^dependabot/", "pre-commit-ci-update-config"]
   - changed-files:
-    - any-glob-to-any-file: ['go.mod', 'go.sum']
+      - any-glob-to-any-file: ["go.mod", "go.sum"]

.github/workflows/lint.yml

@@ -4,9 +4,10 @@ on:
   pull_request:
     branches:
       - main
-    paths-ignore:
-      - "examples/**"
-      - "**.md"
+
+defaults:
+  run:
+    shell: bash
 
 concurrency:
   group: ${{ github.ref_name }}-lint
@@ -54,3 +55,15 @@ jobs:
           config: .markdownlint-cli2.yaml
           globs: "**/*.md"
           fix: false
+
+  yaml-lint:
+    name: YAML lint
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Install yamllint
+        run: pip install yamllint
+
+      - name: Lint YAML files
+        run: yamllint .

.github/workflows/scorecards.yml

@@ -1,6 +1,6 @@
 name: OpenSSF Scorecards
 on:
-  branch_protection_rule:
+  branch_protection_rule: # yamllint disable-line rule:empty-values
   schedule:
     - cron: "36 15 * * 3" # run every Wednesday at 15:36 UTC
   push:

.goreleaser.yml

@@ -3,7 +3,7 @@ env:
 
 before:
   hooks:
-  - make LICENSES
+    - make LICENSES
 
 builds:
   - id: nginx-asg-sync
@@ -97,7 +97,7 @@ signs:
   - cmd: cosign
     artifacts: checksum
     output: true
-    certificate: '${artifact}.pem'
+    certificate: "${artifact}.pem"
     args:
       - sign-blob
       - "--output-signature=${signature}"
@@ -108,14 +108,14 @@ signs:
 announce:
   slack:
     enabled: true
-    channel: '#announcements'
-    message_template: 'NGINX Plus Integration with Cloud Autoscaling {{ .Tag }} is out! Check it out: {{ .ReleaseURL }}'
+    channel: "#announcements"
+    message_template: "NGINX Plus Integration with Cloud Autoscaling {{ .Tag }} is out! Check it out: {{ .ReleaseURL }}"
 
 milestones:
   - close: true
 
 snapshot:
-  name_template: 'edge'
+  name_template: "edge"
 
 snapcrafts:
   - summary: NGINX Plus Integration with Cloud Autoscaling
@@ -125,7 +125,7 @@ snapcrafts:
     grade: devel
     confinement: strict
     publish: true
-    license: 'BSD 2-Clause'
+    license: "BSD 2-Clause"
     apps:
       nginx-asg-sync:
         command: nginx-asg-sync

.yamllint.yaml

@@ -0,0 +1,22 @@
+---
+yaml-files:
+  - "*.yaml"
+  - "*.yml"
+
+ignore-from-file: .gitignore
+
+extends: default
+
+rules:
+  comments:
+    min-spaces-from-content: 1
+  comments-indentation: enable
+  document-start: disable
+  empty-values: enable
+  line-length:
+    max: 120
+    ignore: |
+      .goreleaser.yml
+      .github/
+  truthy:
+    check-keys: false