Merge pull request #23 from 10up/fix/15

Add a workflow to build a release asset

.github/workflows/build-release-zip.yml

@@ -0,0 +1,45 @@
+name: Build release zip
+
+on:
+  workflow_dispatch:
+  workflow_call:
+  push:
+    branches:
+      - trunk
+
+jobs:
+  build:
+    name: Build release zip
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Cache node_modules
+        id: cache-node-modules
+        uses: actions/cache@v3
+        env:
+          cache-name: cache-node-modules
+        with:
+          path: node_modules
+          key: ${{ runner.os }}-build-${{ env.cache-name }}-${{ hashFiles('**/package-lock.json') }}
+
+      - name: Install Composer dependencies
+        run: composer install --no-dev -o
+
+      - name: Setup node version and npm cache
+        uses: actions/setup-node@v3
+        with:
+          node-version-file: .nvmrc
+          cache: npm
+
+      - name: Install Node dependencies
+        if: steps.cache-node-modules.outputs.cache-hit != 'true'
+        run: npm ci --no-optional
+
+      - name: Build plugin
+        run: npm run build
+
+      - name: Generate ZIP file
+        uses: 10up/action-wordpress-plugin-build-zip@stable