add more examples to docker documentation

docker/readme.txt

@@ -6,3 +6,13 @@ docker build -t lombok-gradle-jdk9 -f gradle/Dockerfile .
 
 docker build -t lombok-gradle-jdk9 --build-arg lombokjar=lombok-1.16.18.jar -f gradle/Dockerfile .
 
+
+Example run commands:
+
+docker run -it lombok-gradle-jdk9
+
+docker run --rm -it -v /<lombokhome>/dist/lombok.jar:/workspace/lombok.jar lombok-gradle-jdk9
+
+Example container commands:
+
+gradle assemble