Add --module-path parameter to jlink invocation.

Change-Id: I3ccba73e2273e1fc0ce3ba7b98c424844b822ae9
diff --git a/openjdk-runtime/Dockerfile b/openjdk-runtime/Dockerfile
index def6305..b1dac88 100644
--- a/openjdk-runtime/Dockerfile
+++ b/openjdk-runtime/Dockerfile
@@ -12,6 +12,7 @@
 RUN /jdk/*/bin/jlink \
     -J-XX:MaxRAMPercentage=75 \
     --add-modules ALL-MODULE-PATH \
+    --module-path /jdk/*/jmods \
     --compress=1 \
     --no-man-pages \
     --strip-debug \