Update manual installation docs to include tag checkout (#157)

Author: ciarams87

.github/workflows/ci.yml

@@ -102,8 +102,9 @@ jobs:
         uses: docker/build-push-action@v2
         with:
           context: '.'
-          cache-from: type=gha
-          cache-to: type=gha,mode=max
+          # Disable cache until https://github.com/docker/buildx/issues/681 is fixed
+          # cache-from: type=gha
+          # cache-to: type=gha,mode=max
           tags: nginx/nginx-ingress-operator:${{ github.sha }}
           push: false
 
@@ -135,6 +136,9 @@ jobs:
         with:
           file: Dockerfile
           context: '.'
+          # Disable cache until https://github.com/docker/buildx/issues/681 is fixed
+          # cache-from: type=gha
+          # cache-to: type=gha,mode=max
           cache-from: type=gha
           cache-to: type=gha,mode=max
           tags: |

.gitignore

@@ -23,3 +23,4 @@ testbin/*
 *.swp
 *.swo
 *~
+.vscode/

docs/manual-installation.md

@@ -1,17 +1,22 @@
 # Manual installation
 
-### 1. Deploy the operator
-
 This will deploy the operator in the `nginx-ingress-operator-system` namespace.
 
 
 1. Deploy the Operator and associated resources:
-   1. <Openshift> To deploy the Operator and associated resources to an OpenShift environment, run:
+   1. Clone the `nginx-ingress-operator` repo and checkout the latest stable tag:
+    ```
+    git clone https://github.com/nginxinc/nginx-ingress-operator/
+    cd nginx-ingress-operator/
+    git checkout v0.3.0
+    ```
+
+   2. `Openshift` To deploy the Operator and associated resources to an OpenShift environment, run:
     ```
     make openshift-deploy IMG=registry.connect.redhat.com/nginx/nginx-ingress-operator:0.3.0
     ```
 
-   2. To deploy the Operator and associated resources to all other environments:
+   3. Alternatively, to deploy the Operator and associated resources to all other environments:
     ```
     make deploy IMG=nginx/nginx-ingress-operator:0.3.0
     ```