Extract just the tag name

Author: bennothommo

.github/workflows/release.yml

@@ -15,6 +15,9 @@ jobs:
       - name: Get current time
         uses: 1466587594/get-current-time@v2
         id: current-time
+      - name: Get the version
+        id: current-version
+        run: echo ::set-output name=VERSION::${GITHUB_REF/refs\/tags\//}
       - name: Setup PHP
         uses: shivammathur/setup-php@v2
         with:
@@ -23,7 +26,7 @@ jobs:
       - name: Install Composer dependencies
         run: composer install --no-progress --no-suggest
       - name: Update box.json
-        run: sed -i 's/##version##/${{ github.ref }}/g; s/##datetime##/${{ steps.current-time.outputs.time }}/g' box.json
+        run: sed -i 's/##version##/${{ steps.current-version.outputs.VERSION }}/g; s/##datetime##/${{ steps.current-time.outputs.time }}/g' box.json
       - name: Build project
         run: ./vendor/bin/box compile
       - name: Create release