TestAdd GitHub Actions workflow for testing Firewalld. It adds a chec…

…k to ensure that the Docker container needed for testing is running correctly. If the container has failed to start, the commit now instructs the workflow to output corresponding logs and docker inspect outputs for debugging, and then exits the workflow with an error status.

.github/workflows/test-firewalld.yml

@@ -28,6 +28,7 @@ jobs:
         # Wait for the container to be fully initialized
         sleep 10
         # Check if the container is running
+        # Capture and print logs if the container is not running
         if [ "$(sudo docker inspect -f '{{.State.Running}}' firewalld-container)" != "true" ]; then
           echo "Container failed to start. Logs:"
           sudo docker logs firewalld-container

Dockerfile.firewalld

@@ -31,6 +31,12 @@ RUN (cd /lib/systemd/system/sysinit.target.wants/; for i in *; do [ $i == system
     rm -f /lib/systemd/system/anaconda.target.wants/*; \
     systemctl set-default multi-user.target
 
+# Override systemd defaults
+RUN mkdir -p /etc/systemd/system/service.d
+RUN echo '[Service]' > /etc/systemd/system/service.d/override.conf
+RUN echo 'ExecStart=' >> /etc/systemd/system/service.d/override.conf
+RUN echo 'ExecStart=/usr/lib/systemd/systemd' >> /etc/systemd/system/service.d/override.conf
+
 VOLUME [ "/sys/fs/cgroup" ]
 
 CMD ["/sbin/init"]