deploy-development.yml: set release number for testing

will be disabled after testing

.github/workflows/deploy-development.yml

@@ -28,6 +28,9 @@ jobs:
         username: ${{ github.actor }}
         password: ${{ secrets.GITHUB_TOKEN }}
 
+    - name: Set environment variables
+      run: echo RELEASE=$(cat ./src/package.json | jq -r .release) >> $GITHUB_ENV
+
     - name: Build & Publish Docker Image
       uses: docker/build-push-action@v5
       with: