Add the files for the cli example

[refs #debd91fa82c1]

Author: jfahrer

entrypoints/curl/Dockerfile

@@ -0,0 +1,7 @@
+FROM alpine:3.6
+
+RUN apk update \
+      && apk add curl \
+      && rm -rf /var/cache/apk/*
+
+ENTRYPOINT ["/usr/bin/curl"]

entrypoints/curl/docker-compose.yml

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+version: "3.3"
+
+services:
+  curl:
+    image: jfahrer/curl:latest
+    build:
+      context: .