ci: echo RUNNER_NAME (brix02 failover proof)

.forgejo/workflows/ci.yml

@@ -4,9 +4,9 @@ jobs:
   where-am-i:
     runs-on: fenced
     steps:
-      - name: prove this ran on the crunchy fenced runner
+      - name: prove which fenced runner executed this
         run: |
+          echo "runner-name: ${RUNNER_NAME:-unknown}"
           echo "kernel:    $(uname -a)"
           echo "egress-ip: $(curl -s --max-time 8 https://api.ipify.org || echo n/a)"
-          echo "container-host-check: /proc/1 sees $(cat /etc/hostname)"
-          echo "docker-in-job: $(docker version --format '{{.Server.Version}}' 2>/dev/null || echo 'no docker in job (expected)')"
+          echo "hostname:  $(cat /etc/hostname)"