[CI:DOCS] Add a hello world image to quay.io

[NO NEW TESTS NEEDED]

This commit describes how to run the quay.io/podman/hello
image.  It also contains the files necessary to build that
image localy, and a README.md explaining the image and how
to build it.

Signed-off-by: tomsweeneyredhat <tsweeney@redhat.com>

1 files changed, 55 insertions, 0 deletions

diff --git a/contrib/helloimage/README.md b/contrib/helloimage/README.md
new file mode 100644
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+![PODMAN logo](../../logo/podman-logo-source.svg)
+
+# Podman Hello World image
+
+## Overview
+
+This directory contains the Containerfile and bash script necessary to create the
+"hello" podman image housed on quay.io under the Podman account in a public
+repository.  The image is public and can be pulled without credentials.
+
+Using this image is helpful to:
+
+ * Prove that basic Podman operations are working on the host.
+ * Shows that the image was pulled from the quay.io container registry.
+ * Container creation was successfuly accomplished. (`podman ps -a`)
+ * The created container was able to stream output to your terminal.
+
+## Directory Contents
+
+The contents of this directory contain:
+ * ./Containerfile
+ * ./podman_hello_world.bash
+
+## Sample Usage
+
+To simply run the image:
+
+```
+podman run quay.io/podman/hello
+
+! ... Hello Podman World ...!
+
+         .--"--.
+       / -     - \
+      / (O)   (O) \
+   ~~~| -=(,Y,)=- |
+    .---. /`  \   |~~
+ ~/  o  o \~~~~.----. ~~
+  | =(X)= |~  / (O (O) \
+   ~~~~~~~  ~| =(Y_)=-  |
+  ~~~~    ~~~|   U      |~~
+
+Project:   https://github.com/containers/podman
+Website:   https://podman.io
+Documents: https://docs.podman.io
+Twitter:   @Podman_io
+```
+To build the image yourself, copy the files from this directory into
+a local directory and issue these commands:
+
+```
+chmod 755 ./podman_hello_world.bash
+podman build -t myhello .
+podman run myhello
+```