Change CI to publish to GitHub package registry

* Scope the package name by organisation. This ties the package to the
RPF organisation rather than just to my user and means that, for
example, any member of the organisation can publish the package.

* Only publish package on successful builds of the experience-cs
branch.

* Use organisation-specific release version to avoid confusion with
  versions in the canonical package and use "experience-cs" string
instead of "raspberrypifoundation" to distinguish it from the package
version(s) used by the Code Club World project.

* Always publish using "latest" npm tag; not "hotfix" or "stable".

* Add `--access public` option to `npm publish` command, because scoped
packages only allow "restricted" access by default.

* We can use the GITHUB_TOKEN that is made available by default in a
  GitHub Action as the NODE_AUTH_TOKEN, although we need to add the
`packages: write` permission to the Action.

Co-authored-by: Chris Roos <chris.roos@gofreerange.com>
Co-authored-by: Chris Lowis <chris.lowis@gofreerange.com>

Author: 3 people

.github/workflows/ci-cd.yml

@@ -3,7 +3,7 @@ name: CI/CD
 on:
     pull_request: # Runs whenever a pull request is created or updated (including from another fork)
     push: # Runs whenever a commit is pushed to the repository...
-        branches: [master, develop, hotfix/*] # ...on any of these branches
+        branches: [experience-cs]
     workflow_dispatch: # Allows you to run this workflow manually from the Actions tab
 concurrency:
     group: "${{ github.workflow }} @ ${{ github.head_ref || github.ref }}"
@@ -14,6 +14,7 @@ permissions:
     pages: write # deploy to GitHub Pages
     issues: write # comment on released issues
     pull-requests: write # comment on released pull requests
+    packages: write # deploy to GitHub Packages
 
 jobs:
     ci-cd:
@@ -28,6 +29,7 @@ jobs:
               with:
                   cache: "npm"
                   node-version-file: ".nvmrc"
+                  registry-url: "https://npm.pkg.github.com"
             - name: Info
               run: |
                   cat <<EOF
@@ -79,11 +81,14 @@ jobs:
                 if [[ ${{contains(github.ref, 'hotfix')}}  ]]; then
                 sed -e "s|hotfix/REPLACE|${{ github.ref_name }}|" --in-place release.config.js
                 fi
-            - name: Semantic Release
+            - name: Publish to GitHub Packages
+              if: github.ref == 'refs/heads/experience-cs'
+              run: |
+                RELEASE_VERSION="0.1.0-experience-cs.$(date +'%Y%m%d%H%M%S')"
+                npm version --no-git-tag-version $RELEASE_VERSION
+                npm publish --access public --tag latest
               env:
-                NPM_TOKEN: ${{ secrets.NPM_TOKEN }}
-                GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-              run: npx --no -- semantic-release
+                NODE_AUTH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
             - name: Deploy playground to GitHub Pages
               uses: peaceiris/actions-gh-pages@373f7f263a76c20808c831209c920827a82a2847 # v3
               if: github.ref == 'refs/heads/develop' || github.ref == 'refs/heads/master' || github.ref == 'refs/heads/main'