Add debugging info for "test tunnel" CI step

.github/workflows/ci.yml

@@ -59,6 +59,9 @@ jobs:
         run: |
           for cmd in "docker" "podman" "sudo podman"; do
             $cmd run --rm -d --name wireguard --cap-add NET_ADMIN --cap-add NET_RAW --cap-add SYS_MODULE --sysctl net.ipv4.conf.all.src_valid_mark=1 -v ${{ github.workspace }}/wireguard.conf:/etc/wireguard/wg0.conf wireguard
+            timeout 5 $cmd exec wireguard wg show || echo "Container not ready yet"
+            $cmd logs wireguard
+            if ! $cmd ps | grep -q wireguard; then echo "ERROR: WireGuard container exited" && exit 1; fi
             normal_ip=$($cmd run --rm curlimages/curl --max-time 3 --retry 3 --retry-delay 1 --retry-all-errors ifconfig.io)
             wireguard_ip=$($cmd run --rm --net=container:wireguard curlimages/curl --max-time 3 --retry 3 --retry-delay 1 --retry-all-errors ifconfig.io)
             if [ "$normal_ip" = "$wireguard_ip" ]; then echo "normal ip and wireguard ip are the same" && exit 1; fi