Merge branch 'healthcheck-addition' into 'development'

Added Healthcheck

See merge request !6

Dockerfile

 # Build the intermediate container
-ARG BASE_REGISTRY=registry1.dsop.io/ironbank/redhat/ubi
-ARG BASE_IMAGE=ubi8
+ARG BASE_REGISTRY=registry1.dso.mil
+ARG BASE_IMAGE=ironbank/redhat/ubi/ubi8
 ARG BASE_TAG=8.3
 FROM kubeflow-images-public/admission-webhook:v20190520-v0-139-gcee39dbc-dirty-0d8f4c AS base
 FROM ${BASE_REGISTRY}/${BASE_IMAGE}:${BASE_TAG}
@@ -15,4 +15,5 @@ RUN find / -path /proc -prune -o -perm /2000 -exec chmod g-s {} \;
 RUN chown -R kf /app
 USER kf
 WORKDIR /app
+HEALTHCHECK --interval=30s --timeout=30s --start-period=5s --retries=3 CMD [ "curl -sL -w "%{http_code}\n" https://127.0.0.1:4443 -o /dev/null" ]
 ENTRYPOINT [ "./webhook" ]