Migration from DeploymentConfig to Deployment

For more information see
https://docs.openshift.com/container-platform/4.12/applications/deployments/what-deployments-are.html

Since OpenShift 4.14 DeploymentConfigs are deprecated. https://access.redhat.com/articles/7041372

Signed-off-by: Petr "Stone" Hracek <[email protected]>

Author: phracek

openshift/templates/nginx.json

@@ -16,7 +16,8 @@
   },
   "message": "The following service(s) have been created in your project: ${NAME}.\n\nFor more information about using this template, including OpenShift considerations, see https://github.com/sclorg/nginx-ex/blob/master/README.md.",
   "labels": {
-    "template": "nginx-example"
+    "template": "${NAME}",
+    "app": "${NAME}"
   },
   "objects": [
     {
@@ -126,46 +127,32 @@
       }
     },
     {
-      "kind": "DeploymentConfig",
-      "apiVersion": "apps.openshift.io/v1",
+      "kind": "Deployment",
+      "apiVersion": "apps/v1",
       "metadata": {
         "name": "${NAME}",
         "annotations": {
           "description": "Defines how to deploy the application server",
-          "template.alpha.openshift.io/wait-for-ready": "true"
+          "template.alpha.openshift.io/wait-for-ready": "true",
+          "image.openshift.io/triggers": "[{\"from\":{\"kind\":\"ImageStreamTag\",\"name\":\"${NAME}:latest\"},\"fieldPath\": \"spec.template.spec.containers[0].image\"}]"
         }
       },
       "spec": {
         "strategy": {
-          "type": "Rolling"
+          "type": "RollingUpdate"
         },
-        "triggers": [
-          {
-            "type": "ImageChange",
-            "imageChangeParams": {
-              "automatic": true,
-              "containerNames": [
-                "nginx-example"
-              ],
-              "from": {
-                "kind": "ImageStreamTag",
-                "name": "${NAME}:latest"
-              }
-            }
-          },
-          {
-            "type": "ConfigChange"
-          }
-        ],
         "replicas": 1,
         "selector": {
-          "name": "${NAME}"
+          "matchLabels": {
+            "name": "${NAME}",
+            "app": "${NAME}"
+          }
         },
         "template": {
           "metadata": {
-            "name": "${NAME}",
             "labels": {
-              "name": "${NAME}"
+              "name": "${NAME}",
+              "app": "${NAME}"
             }
           },
           "spec": {