ci(nightly): add script for generating nightly builds of ionic

.github/workflows/nightly.yml

@@ -0,0 +1,45 @@
+name: 'Ionic Nightly Build'
+
+on:
+  workflow_dispatch:
+
+  # TODO remove this before merging
+  # This is so we can test in the PR
+  pull_request:
+    branches: [ '**' ]
+
+jobs:
+  dev-build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+      - uses: actions/setup-node@v2
+        with:
+          node-version: 16
+      - name: Install Dependencies
+        run: npm ci --no-package-lock && lerna bootstrap --ignore-scripts -- --legacy-peer-deps
+        shell: bash
+      - name: Prepare NPM Token
+        run: echo //registry.npmjs.org/:_authToken=${NPM_TOKEN} > .npmrc
+        shell: bash
+        env:
+          NPM_TOKEN: ${{ secrets.NPM_TOKEN }}
+      # A 1 is required before the timestamp
+      # as lerna will fail when there is a leading 0
+      # See https://github.com/lerna/lerna/issues/2840
+      - name: Create Nightly Hash
+        run: |
+          echo "HASH=1$(git log -1 --format=%H | cut -c 1-7)" >> $GITHUB_ENV
+          echo "TIMESTAMP=1$(date +%s)" >> $GITHUB_ENV
+          echo "CURRENT_VERSION=$(node ./.scripts/bump-version.js)" >> $GITHUB_ENV
+        shell: bash
+      - name: Checkout Nightly Branch
+        run: |
+          git checkout -b nightly-$(echo "${{ env.TIMESTAMP }}")-$(echo "${{ env.HASH }}")
+        shell: bash
+      - name: Create Nightly Build
+        run: |
+          HUSKY_SKIP_HOOKS=1 lerna publish $(echo "${{ env.CURRENT_VERSION }}")-nightly.$(echo "${{ env.TIMESTAMP }}").$(echo "${{ env.HASH }}") --canary --no-verify-access --yes --force-publish='*' --dist-tag nightly --conventional-commits --conventional-prerelease --exact --create-release github
+        shell: bash