Bump github/super-linter from 5 to 6 (#118)

* Bump github/super-linter from 5 to 6

Bumps [github/super-linter](https://github.com/github/super-linter) from 5 to 6.
- [Release notes](https://github.com/github/super-linter/releases)
- [Changelog](https://github.com/github/super-linter/blob/main/CHANGELOG.md)
- [Commits](github/super-linter@v5...v6)

---
updated-dependencies:
- dependency-name: github/super-linter
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

* Fix CKV2_GHA_1 issue

* Add healthcheck to dockerfile

Although I'm not sure this will be ever used

---------

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Enol Fernandez <enol.fernandez@egi.eu>

.github/workflows/check-links.yml

@@ -3,6 +3,8 @@ name: Check links
 
 on: [pull_request]
 
+permissions: read-all
+
 jobs:
   markdown-link-check:
     name: Check links using markdown-link-check

.github/workflows/docker.yml

@@ -7,6 +7,8 @@ on:
     - main
   pull_request:
 
+permissions: read-all
+
 jobs:
   builder:
     name: Build and push images

.github/workflows/lint.yml

@@ -3,6 +3,8 @@ name: Lint
 
 on: [pull_request, push]
 
+permissions: read-all
+
 jobs:
   super-lint:
     name: Lint with Super-Linter
@@ -18,7 +20,7 @@ jobs:
 
       # Runs the Super-Linter action
       - name: Run Super-Linter on new changes
-        uses: github/super-linter@v5
+        uses: github/super-linter@v6
         env:
           DEFAULT_BRANCH: main
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

Dockerfile

@@ -15,5 +15,8 @@ RUN pip3 install --no-cache-dir /egi-notebooks-hub
 # Copy images to the right place so they are found
 RUN cp -r /egi-notebooks-hub/static/* /usr/local/share/jupyterhub/static/
 
+HEALTHCHECK --interval=5m --timeout=3s \
+  CMD curl -f http://localhost:8000/hub/health || exit 1
+
 ARG NB_USER=jovyan
 USER ${NB_USER}