Update Docker run command in test workflow

The command to run the docker container in the Github Actions workflow file, 'test-firewalld.yml', has been updated. The '--init' flag was added to the command to ensure that an init process is included. This helps in handling the lifecycle events of the container more gracefully.

.github/workflows/test-firewalld.yml

@@ -23,7 +23,7 @@ jobs:
     - name: Run tests
       run: |
         # Run the container with systemd initialization
-        docker run --privileged --name firewalld-container -d -v /sys/fs/cgroup:/sys/fs/cgroup:ro my-firewalld-image /usr/sbin/init
+        docker run --init --privileged --name firewalld-container -d -v /sys/fs/cgroup:/sys/fs/cgroup:ro my-firewalld-image /usr/sbin/init
 
         # Wait for the container to be fully initialized
         sleep 10