Update build_docker_image.yml (#2)

Author: Bardin08

.github/workflows/build_docker_image.yml

@@ -16,7 +16,9 @@ jobs:
               with:
                   files: '**/appsettings.json'
               env:
-                # configure your variables substitution here
+                MassTransit.Transport.Port: 23501
+                MassTransit.Transport.Username: ${{ secrets.RABBITMQ_USERNAME }}
+                MassTransit.Transport.Password: ${{ secrets.RABBITMQ_PASSWORD }}                # configure your variables substitution here
 
             - name: Login to GitHub Container Registry
               uses: docker/login-action@v3