diff --git a/images/base/Dockerfile b/images/base/Dockerfile
index 974857f..605e9c1 100644
--- a/images/base/Dockerfile
+++ b/images/base/Dockerfile
@@ -10,3 +10,4 @@ RUN \
 
 ADD run_stage.sh /usr/bin/run_stage
 ADD git-mini-clone.sh /usr/bin/git-mini-clone
+ADD check-wget.sh /usr/bin/check-wget
diff --git a/images/base/check-wget.sh b/images/base/check-wget.sh
new file mode 100755
index 0000000..9e64bba
--- /dev/null
+++ b/images/base/check-wget.sh
@@ -0,0 +1,10 @@
+#!/bin/bash
+set -xe
+FNAME="$1"
+URL="$2"
+SHA512="$3"
+SHAFILE="${FNAME}.sha512"
+wget -O "${FNAME}" "${URL}"
+trap "rm -f ${SHAFILE}" EXIT
+echo "${SHA512}  ${FNAME}" > "${SHAFILE}"
+sha512sum -c "${SHAFILE}"