docs: add ArgoCD configuration documentation

README.md

@@ -61,6 +61,31 @@ You should now be able to access the cluster via your local terminal.
 > \[!IMPORTANT]\
 > Since this is still a WIP, we are planning to provide access to the cluster via a bastion host instead of direct access to the cluster after running the above command. Feel free to open a PR in case you want to contribute and help us out in setting up a bastion host to access the AWS EKS cluster.
 
+## Working with ArgoCD
+
+- To setup and install AgoCD on the cluster, run the command:
+
+```bash
+kubectl apply -n argocd -f https://raw.githubusercontent.com/argoproj/argo-cd/stable/manifests/install.yaml
+```
+
+- To access the ArgoCD dashboard, we need to port-forward and expose the port for ArgoCD:
+
+```bash
+# remember to open the port forward in another terminal window
+# the port should always be open to access the ArgoCD dashboard
+kubectl port-forward svc/argocd-server 8080:443 -n argocd
+```
+
+- To get the initial admin password to access the ArgoCD dashboard, we need to get the `base64` encoded password from the `secrets` resource in the `argocd` namespace and display the value using `-o yaml` parameter. Once done, we can then decode the `base64` value:
+
+```bash
+echo "<base64-encoded-pwd> | base64 -d"
+# ignore the % at the end of the decoded string
+```
+
+You can now access the ArgoCD dashboard via `https://localhost:8080` and login using the username `admin` and password retrieved from the previous step.
+
 ## LICENSE
 
 This project is licensed under the MIT open-source license.