Update README.md with instructions for installing and using the Appli…

…cation Operator

README.md

@@ -1 +1,75 @@
-# application-operator
+# Application Operator
+
+The Application Operator is a Kubernetes operator built using the Go plugin of Operator SDK. It automates the process of deploying an application as a Kubernetes Deployment and exposing it as a Kubernetes Service.
+
+## Prerequisites
+
+- Kubernetes cluster
+- `kubectl` installed and configured to interact with your cluster
+- Operator SDK
+
+## Operator Installation
+
+1. Clone the repository:
+
+```bash
+git clone https://github.com/yourusername/application-operator.git
+cd application-operator
+```
+
+2. Install the CRD:
+
+```bash
+kubectl apply -f config/crd/bases/
+```
+
+3. Install the Operator:
+
+```bash
+kubectl apply -f config/manager/
+```
+
+## Usage
+
+1. Create an Application resource:
+
+```yaml
+apiVersion: api.app.op/v1alpha1
+kind: Application
+metadata:
+  labels:
+    app.kubernetes.io/name: application
+    app.kubernetes.io/instance: application-sample
+    app.kubernetes.io/part-of: application-operator
+    app.kubernetes.io/managed-by: kustomize
+    app.kubernetes.io/created-by: application-operator
+  name: application-sample
+spec:
+  replicas: 2
+  image: sayedimran/fastapi-sample-app:v4
+  port: 7000
+  env:
+  - name: APP_ENV
+    value: production
+  - name: APP_NAME
+    value: fastapi-sample-app
+```
+
+2. Apply the resource:
+
+```bash
+kubectl apply -f config/samples/
+```
+
+3. Verify that the Application resource has been created:
+
+```bash
+kubectl get app
+```
+
+4. Verify that the Deployment and Service resources have been created:
+
+```bash
+kubectl get deployment
+kubectl get service
+```