chore: Switch linter to rumdl (#36)

Signed-off-by: Steve Hipwell <[email protected]>

Author: stevehipwell

.github/workflows/validate-site.yaml

@@ -28,11 +28,20 @@ jobs:
         with:
           fetch-depth: 0
 
-      - name: Run markdownlint check
-        uses: DavidAnson/markdownlint-cli2-action@992badcdf24e3b8eb7e87ff9287fe931bcb00c6e # v20.0.0
+      - name: Install rumdl
+        uses: action-stars/install-tool-from-github-release@1fa61c3bea52eca3bcdb1f5c961a3b113fe7fa54 # v0.2.6
         with:
-          config: .markdownlint.yaml
-          globs: "**/*.md"
+          github_token: ${{ github.token }}
+          owner: rvben
+          repository: rumdl
+          filename_format: "{name}-v{version}-{arch}-{os}.{ext}"
+          arch_amd64: x86_64-unknown
+          os_linux: linux-gnu
+          check_command: rumdl --version
+          version: latest
+
+      - name: Lint
+        run: rumdl check --output-format github .
 
       - name: Setup Pages
         id: pages

.markdownlint.yaml

@@ -0,0 +1,9 @@
+[global]
+disable = ["MD028", "MD013"]
+
+[MD024]
+siblings-only = true
+
+[MD033]
+allowed-elements = ["a", "br", "details", "i", "p", "summary", "sub", "sup"]
+

.rumdl.toml

@@ -2,7 +2,6 @@
 title: About
 ---
 
-
 I'm Steve; I'm a bit of a technology nerd primarily focusing on Kubernetes, platforms and the adjacent technologies; but I have a broad range of interests and I often find myself nerd-sniped by something new and interesting on [Hacker News](https://news.ycombinator.com/) or [Lobsters](https://lobste.rs/).
 
 I have worked in the technology industry since 2005 and I like to think that I'm a comb shaped engineer; I have a broad range of experience and knowledge but I also have a few areas where I have deep expertise. I regularly contribute to multiple diverse OSS projects, I maintain a number of personal OSS projects on GitHub, and I have a couple of GitHub orgs where I'm attempting to build a community ([Action Stars](https://github.com/action-stars) & [Terr4m](https://github.com/terr4m)).

content/pages/about.md

@@ -3,8 +3,11 @@ set windows-shell := ["pwsh", "-NoLogo", "-Command"]
 default:
   just --list
 
-markdownlint:
-  npm exec markdownlint-cli2 --yes -- --fix "**/*.{md,markdown}"
+fmt:
+  rumdl fmt --fix .
+
+lint:
+  rumdl check .
 
 build:
   hugo build --gc  --minify --environment production