Define environment variable container style (#8743)

* define-environment-variable-container format

* run-stateless-application-deployment format

content/en/docs/tasks/run-application/run-stateless-application-deployment.md

@@ -41,11 +41,11 @@ a Deployment that runs the nginx:1.7.9 Docker image:
 
 1. Create a Deployment based on the YAML file:
 
-       kubectl apply -f https://k8s.io/docs/tasks/run-application/deployment.yaml
+        kubectl apply -f https://k8s.io/docs/tasks/run-application/deployment.yaml
 
 1. Display information about the Deployment:
 
-       kubectl describe deployment nginx-deployment
+        kubectl describe deployment nginx-deployment
 
     The output is similar to this:
 
@@ -80,7 +80,7 @@ a Deployment that runs the nginx:1.7.9 Docker image:
 
 1. List the pods created by the deployment:
 
-       kubectl get pods -l app=nginx
+        kubectl get pods -l app=nginx
 
     The output is similar to this:
 
@@ -90,7 +90,7 @@ a Deployment that runs the nginx:1.7.9 Docker image:
 
 1. Display information about a pod:
 
-       kubectl describe pod <pod-name>
+        kubectl describe pod <pod-name>
 
     where `<pod-name>` is the name of one of your pods.
 
@@ -103,11 +103,11 @@ specifies that the deployment should be updated to use nginx 1.8.
 
 1. Apply the new YAML file:
 
-       kubectl apply -f https://k8s.io/docs/tasks/run-application/deployment-update.yaml
+         kubectl apply -f https://k8s.io/docs/tasks/run-application/deployment-update.yaml
 
 1. Watch the deployment create pods with new names and delete the old pods:
 
-       kubectl get pods -l app=nginx
+         kubectl get pods -l app=nginx
 
 ## Scaling the application by increasing the replica count
 
@@ -119,11 +119,11 @@ should have four pods:
 
 1. Apply the new YAML file:
 
-       kubectl apply -f https://k8s.io/docs/tasks/run-application/deployment-scale.yaml
+        kubectl apply -f https://k8s.io/docs/tasks/run-application/deployment-scale.yaml
 
 1. Verify that the Deployment has four pods:
 
-       kubectl get pods -l app=nginx
+        kubectl get pods -l app=nginx
 
     The output is similar to this: