chore: copy elk setup from docker-elk git repo

https://github.com/deviantony/docker-elk

setup/Dockerfile

@@ -0,0 +1,15 @@
+ARG ELASTIC_VERSION
+
+# https://www.docker.elastic.co/
+FROM docker.elastic.co/elasticsearch/elasticsearch:${ELASTIC_VERSION}
+
+USER root
+
+RUN set -eux; \
+	mkdir /state; \
+	chmod 0775 /state; \
+	chown elasticsearch:root /state
+
+USER elasticsearch:root
+
+ENTRYPOINT ["/entrypoint.sh"]