Add docs/debugging.md

docs/debugging.md

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+# Iterating on the installer without deploying the operator
+
+Go through the [normal basic install](https://github.com/ansible/awx-operator/blob/devel/README.md#basic-install) steps.
+
+Install some dependencies:
+
+```
+$ ansible-galaxy collection install -r molecule/requirements.yml
+$ pip install -r molecule/requirements.txt
+```
+
+To prevent the changes we're about to make from being overwritten, scale down any running instance of the operator:
+
+```
+$ kubectl scale deployment awx-operator-controller-manager --replicas=0
+```
+
+Create a playbook that invokes the installer role (the operator uses ansible-runner's role execution feature):
+
+```yaml
+# run.yml
+---
+- hosts: localhost
+  roles:
+    - installer
+```
+
+Create a vars file:
+
+```yaml
+# vars.yml
+ansible_operator_meta:
+  name: awx
+  namespace: awx
+ingress_type: ingress
+```
+
+Run the installer:
+
+```
+$ ansible-playbook run.yml -e @vars.yml -v
+```
+
+Grab the URL and admin password:
+
+```
+$ minikube service awx-service --url -n awx
+$ minikube kubectl get secret awx-admin-password -- -o jsonpath="{.data.password}" | base64 --decode
+LU6lTfvnkjUvDwL240kXKy1sNhjakZmT
+```