docs: add a simple local development guide

Author: joekr

.gitignore

@@ -44,3 +44,6 @@ test/e2e/data/infrastructure-oci/v1beta1/cluster-template-bare-metal.yaml
 test/e2e/data/infrastructure-oci/v1beta1/cluster-template-custom-networking-seclist.yaml
 test/e2e/data/infrastructure-oci/v1beta1/cluster-template-custom-networking-nsg.yaml
 test/e2e/data/infrastructure-oci/v1beta1/cluster-template-multiple-node-nsg.yaml
+
+# local development files
+auth-config.yaml

DEVELOPMENT.md

@@ -0,0 +1,41 @@
+# Development
+
+The simplest way to test the code is to run it from local.
+If you have `capoci-controller-manager` running in your management cluster, please scale down the deployment:
+```bash
+kubectl scale deployment/capoci-controller-manager  --replicas=0 -n cluster-api-provider-oci-system
+```
+Create and modify the auth-config.yaml file:
+```bash
+cp <repo-path>/hack/auth-config-template.yaml <repo-path>/auth-config.yaml
+```
+Then modify the file with your information. 
+
+Then run the following commands:
+```bash
+export AUTH_CONFIG_DIR="<repo-path>/auth-config.yaml"
+make run
+```
+The above step will run the code locally using your local management cluster.
+
+If you want to run your changes using a docker built image execute the following steps:
+
+```bash
+export TAG=<tag>
+export REGISTRY="<region-key>.ocir.io/<namespace>"
+make docker-build
+```
+`region-key` for example, phx. See the [Availability by Region](https://docs.oracle.com/en-us/iaas/Content/Registry/Concepts/registryprerequisites.htm#Availab) topic in the Oracle Cloud Infrastructure Registry 
+documentation.
+
+`namespace` is the auto-generated Object Storage namespace string of the tenancy (as shown on the Tenancy Information page) 
+that owns the repository to which you want to push the image.
+
+Push the resulting docker image to the repository. For more info on how to push to OCIR see https://www.oracle.com/webfolder/technetwork/tutorials/obe/oci/registry/index.html
+
+Execute the following steps to install the image
+
+```bash
+make release-manifests
+kubectl apply -f out/infrastructure-oci/v0.1.0-alpha1/infrastructure-components.yaml
+```

hack/auth-config-template.yaml

@@ -0,0 +1,12 @@
+# see Region Identifier in https://docs.oracle.com/en-us/iaas/Content/General/Concepts/regions.htm
+# for a list of regions
+region: <region>
+tenancy: <tenancy OCID>
+user: <user OCID>
+key: |
+  -----BEGIN RSA PRIVATE KEY-----
+  <key info> 
+  -----END RSA PRIVATE KEY-----
+fingerprint: <fingerprint>
+
+useInstancePrincipals: false