feat(oci): ✨ Create an OCI example of a package manager store

A2_oci_package_repository/.gitignore

@@ -0,0 +1 @@
+out

A2_oci_package_repository/README.md

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+# OCI Images
+
+Build an example of using OCI registry as a package manager for chainguard.  
+
+Related [81_oras](../81_oras/README.md)  
+Related [94_regctl](../94_regctl/README.md)  
+
+TODO:
+
+* Build a volume containing lots of deb and apk files
+* Build a base image
+* Build a tarball
+
+## Contents
+
+- [OCI Images](#oci-images)
+  - [Contents](#contents)
+  - [Tarball](#tarball)
+    - [Create](#create)
+    - [Push](#push)
+  - [Resources](#resources)
+
+## Tarball
+
+Generate a bunch of files with leading zeros.  
+
+### Create
+
+```sh
+file="pkg"
+extension="apk"
+outpath="./out/packages/"
+mkdir -p ${outpath}
+for index in $(seq 0 10); 
+do
+    filepath=`printf %s%s%04d.%s ${outpath} ${file} ${index} ${extension}`
+    echo "Creating ${filepath}"
+    dd if=/dev/urandom of=$filepath bs=1024 count=1
+    #touch $filepath
+    sleep 1
+done
+
+tar -czvf ./out/packages.tar.gz ./out/packages/
+tar -tf ./out/packages.tar.gz
+ll -a ./out/packages.tar.gz
+```
+
+### Push
+
+```sh
+./bins/regctl-darwin-amd64 artifact put registry-1.docker.io/chrisguest/demo --file ./README.md --artifact-type application/vnd.oci.readme.md
+```
+
+
+## Resources
+

TODO.md

@@ -31,4 +31,5 @@ https://www.andreafortuna.org/2019/11/26/cve-2019-14271-a-docker-cp-container-es
 1. https://adamo.wordpress.com/2022/05/05/removing-all-containers-via-ssh/ ssh remote_user@remote_host "docker ps -a -q|xargs -n 1 docker rm -f "
 1. https://github.com/google/gvisor
 2. https://github.com/tonistiigi/binfmt - docker desktop supports it
-1. https://github.com/jwilder/dockerize
+1. https://github.com/jwilder/dockerize
+2. https://docs.docker.com/build/exporters/oci-docker/