Bumped tool versions.

VOL-2647

Change-Id: I048103aa4fd54bae5682aa67c2c238c7001da458
diff --git a/docker/hadolint.Dockerfile b/docker/hadolint.Dockerfile
index dec9bcd..ab38ff7 100644
--- a/docker/hadolint.Dockerfile
+++ b/docker/hadolint.Dockerfile
@@ -13,7 +13,7 @@
 # limitations under the License.
 
 ARG HADOLINT_VERSION
-FROM hadolint/hadolint:v$HADOLINT_VERSION
+FROM hadolint/hadolint:v$HADOLINT_VERSION-alpine
 
 WORKDIR /app