auto-publish unstable packages to NPM

.github/workflows/publish-unstable.yml

@@ -0,0 +1,41 @@
+# For every push to the master branch, this publishes an NPM package to the
+# "unstable" NPM tag.
+
+name: Publish Unstable
+
+on:
+  push:
+    branches:
+      - main
+      - master
+
+jobs:
+  publish:
+    name: "NPM Publish"
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v3
+      - name: Install Node
+        uses: actions/setup-node@v3
+        with:
+          node-version: 14.x
+          cache: yarn
+          # This creates an .npmrc that reads the NODE_AUTH_TOKEN environment variable
+          registry-url: 'https://registry.npmjs.org'
+
+      - name: Install Dependencies
+        run: yarn install --frozen-lockfile
+
+      # We need a workspace aware version of npm because our addon is in a subdir but our .npmrc is in the root
+      - name: npm8
+        run: npm install -g npm@8
+
+      - name: set version
+        run: npm version --no-git-tag-version --workspaces-update=false `node -e "console.log(require('./package.json').version)"`-unstable.`git rev-parse --short HEAD`
+        working-directory: addon
+
+      - name: npm publish
+        run: npm publish --tag=unstable --verbose --workspace=addon
+        env:
+          NODE_AUTH_TOKEN: ${{ secrets.NODE_AUTH_TOKEN }}

RELEASE.md

@@ -65,7 +65,7 @@ you will have the chance to hand tweak the changelog to be used (for the
 `CHANGELOG.md` and GitHub release), then `release-it` continues on to tagging,
 pushing the tag and commits, etc.
 
-## Docs site
+## Docs Site
 
 Once release is done, you should update docs side.
 
@@ -83,3 +83,8 @@ Once release is done, you should update docs side.
 
   From there, GitHub Pages takes care of deploying documentation site to [http://adopted-ember-addons.github.io/ember-keyboard/](http://adopted-ember-addons.github.io/ember-keyboard/).
   You may check the deploy status via GitHub actions [pages-build-deployment workflow](https://github.com/adopted-ember-addons/ember-keyboard/actions/workflows/pages/pages-build-deployment).
+
+## Unstable Tag
+
+For every push to the master branch, [`Publish Unstable`](./.github/workflows/publish-unstable.yml)
+publishes an NPM package to the "unstable" NPM tag.