Merge pull request #52 from arnested/lint

Add linting of Dockerfile and markdown

Author: arnested

.github/workflows/lint.yml

@@ -0,0 +1,19 @@
+name: Lint
+on: pull_request
+
+jobs:
+  dockerfile:
+    name: dockerfile
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Run hadolint
+        uses: brpaz/[email protected]
+
+  markdownlint:
+    name: markdown
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - name: Run markdownlint
+      uses: actionshub/[email protected]

.github/workflows/pull_request.yml

@@ -67,10 +67,11 @@ members of the project's leadership.
 
 ## Attribution
 
-This Code of Conduct is adapted from the [Contributor Covenant][homepage], version 1.4,
-available at https://www.contributor-covenant.org/version/1/4/code-of-conduct.html
+This Code of Conduct is adapted from the [Contributor Covenant][homepage], version
+1.4, available at
+<https://www.contributor-covenant.org/version/1/4/code-of-conduct.html>
 
 [homepage]: https://www.contributor-covenant.org
 
 For answers to common questions about this code of conduct, see
-https://www.contributor-covenant.org/faq
+<https://www.contributor-covenant.org/faq>