fix: use short SHA for Docker image tagging in deployment step

Author: DilshanX09

.github/workflows/build.yml

@@ -94,4 +94,4 @@ jobs:
         with:
           app-name: ${{ secrets.AZURE_WEBAPP_NAME }}
           publish-profile: ${{ secrets.AZURE_WEBAPP_PUBLISH_PROFILE }}
-          images: ${{ secrets.ACR_LOGIN_SERVER }}/express-server:latest
+          images: ${{ secrets.ACR_LOGIN_SERVER }}/express-server:${{ steps.short-sha.outputs.sha }}