Merge pull request #36 from Cirrus-8691/master

Using kubectl ouput

Author: exelban

README.md

@@ -39,6 +39,23 @@ To use kubectl put this step into your workflow:
     args: get pods
 ```
 
+### Using kubectl ouput
+```yaml
+  - run: echo "EXPECTED_NAMESPACE=namespace/$NAMESPACE" >> $GITHUB_ENV
+  - name: 🛂 Check namespace exists
+    uses: actions-hub/kubectl@master
+    with:
+      redirect-to: NAMESPACE_EXIST
+      args: get namespace ${{ env.NAMESPACE }} -o name --ignore-not-found
+
+  - name: 🛡️ Preserve secret WEBAPP_TLS
+    if: env.NAMESPACE_EXIST == env.EXPECTED_NAMESPACE
+    uses: actions-hub/kubectl@master
+    with:
+      redirect-to: WEBAPP_TLS
+      args: get secret webapp-tls -n ${{ env.NAMESPACE }} -o yaml
+```
+
 ## Environment variables
 All these variables need to authorize to kubernetes cluster.  
 I recommend using secrets for this.