diff --git a/doc/build.md b/doc/build.md
index 9736433..d508b50 100644
--- a/doc/build.md
+++ b/doc/build.md
@@ -53,3 +53,9 @@
 ```shell
 $ sbt test
 ```
+
+If you don't have docker, you can skip docker tests which require docker as follows:
+
+```shell
+$ sbt "testOnly * -- -l ExternalDBTest"
+```
\ No newline at end of file