feat(tdx_google): add iproute2 and vector initialization wait

- Include iproute2 in the container path for required networking tools.
- Add a script to wait for vector to initialize before proceeding.

packages/tdx_google/container.nix

@@ -15,10 +15,19 @@
       User = "root";
       EnvironmentFile = "-/run/env/env";
     };
-    path = [ pkgs.docker pkgs.teepot.teepot.tdx_extend ];
+    path = [ pkgs.docker pkgs.teepot.teepot.tdx_extend pkgs.iproute2 ];
     script = ''
       set -eu -o pipefail
 
+      # wait for vector to initialize itself
+      for i in {1..30}; do
+        if [[ $(ss -H -t -l -n sport = 4318) ]]; then
+          break
+        fi
+        echo "Waiting for vector to initialize itself..." >&2
+        sleep 1
+      done
+
       DIGEST=''${CONTAINER_DIGEST#sha256:}
       echo "Measuring $DIGEST" >&2
       test -c /dev/tdx_guest && tdx-extend --digest "$DIGEST" --rtmr 3