trial-4: retireve runc logs

Signed-off-by: Ansuman Sahoo <anshumansahoo500@gmail.com>

Author: unsuman

hack/test-templates.sh

@@ -399,16 +399,14 @@ if [[ -n ${CHECKS["container-engine"]} ]]; then
 
 	if ! timeout 3m bash -euxc "until curl -f --retry 15 --retry-connrefused http://127.0.0.1:8080; do sleep 3; done"; then
 		INFO "=== DEBUG: port forwarding failed (#5030) ==="
-		# Container state (full inspect, first 80 lines)
+		# Container state (inspect, first 80 lines)
 		limactl shell "$NAME" $sudo $CONTAINER_ENGINE inspect nginx 2>&1 | head -80 || true
 		# Container logs (stdout+stderr)
 		limactl shell "$NAME" $sudo $CONTAINER_ENGINE logs nginx 2>&1 || true
-		# Run nginx in foreground to see actual startup error
-		limactl shell "$NAME" $sudo $CONTAINER_ENGINE run --rm --name nginx-debug ${nginx_image} sh -c 'nginx -g "daemon off;" 2>&1 & PID=$!; sleep 5; kill $PID 2>/dev/null; wait $PID 2>/dev/null' || true
-		# What's listening inside the rootlesskit child namespace
-		limactl shell "$NAME" bash -c 'CHILD=$(cat /run/user/$(id -u)/containerd-rootless/child_pid 2>/dev/null); [ -n "$CHILD" ] && sudo nsenter -t "$CHILD" -n ss -tlnp || echo "no child_pid"' || true
-		# Rootlesskit network driver confirmation
-		limactl shell "$NAME" bash -c 'pgrep -a rootlesskit | head -1' || true
+		# OCI runtime (runc) log -- contains the REAL reason container failed to start
+		limactl shell "$NAME" bash -c 'CID=$('"$sudo"' '"$CONTAINER_ENGINE"' inspect nginx --format "{{.Id}}" 2>/dev/null); for f in ~/.local/share/containerd/io.containerd.runtime.v2.task/default/$CID/log.json /home/*/.local/share/containerd/io.containerd.runtime.v2.task/default/$CID/log.json; do [ -f "$f" ] && echo "=== $f ===" && cat "$f"; done' || true
+		# Containerd journal as the rootless user
+		limactl shell "$NAME" sudo bash -c 'U=$(logname); machinectl shell --uid="$U" .host /bin/bash -c "journalctl --user -u containerd --no-pager -n 100" 2>/dev/null || sudo -u "$U" XDG_RUNTIME_DIR=/run/user/$(id -u "$U") journalctl --user -u containerd --no-pager -n 100' || true
 		INFO "=== END DEBUG ==="
 		ERROR "Port forwarding to nginx container on 127.0.0.1:8080 failed"
 		exit 1