Document use of -Ddocker.showLogs=true

src/site/antora/modules/ROOT/pages/release-review-instructions.adoc

diff --git a/src/site/antora/modules/ROOT/pages/release-review-instructions.adoc b/src/site/antora/modules/ROOT/pages/release-review-instructions.adoc
index 1af0cae..d4ba081 100644
--- a/src/site/antora/modules/ROOT/pages/release-review-instructions.adoc
+++ b/src/site/antora/modules/ROOT/pages/release-review-instructions.adoc
@@ -111,7 +111,7 @@
 +
 [NOTE]
 =====
-If the reviewed project happen to have Docker-based tests (e.g., Log4j), you can enable these tests by activating the `docker` Maven profile using the `-Pdocker` option.
+If the reviewed project happen to have Docker-based tests (e.g., Log4j), you can enable these tests by activating the `docker` Maven profile using the `-Pdocker` option. To help debug Docker issues, use `-Ddocker.showLogs=true`.
 =====
 
 [#troubleshooting]