[CI] reword CI and instal gettext-base for envsubst

.drone.yml

@@ -73,7 +73,7 @@ kind: pipeline
 name: deploy
 
 steps:
-- name: build image
+- name: deploy app
   image: bitnami/kubectl
   environment:
     KUBE_USERNAME:
@@ -85,6 +85,8 @@ steps:
     KUBE_CA:
       form_secret: kubectl_ca
   commands:
+  - sudo apt-get update
+  - sudo apt-get install gettext-base
   - cat kube/kubeconfig_template.yaml | envsubst > /.kube/config
   - kubectl get pods
   - kubectl get deployments