updated API response to get IsComposeFormat and show appropriate text.

app/kubernetes/views/applications/create/createApplication.html

@@ -72,6 +72,18 @@
               on-change="(ctrl.onChangeFileContent)"
             >
               <editor-description>
+                <span class="text-muted small" ng-show="ctrl.stack.IsComposeFormat">
+                  <p>
+                    <i class="fa fa-exclamation-circle orange-icon" aria-hidden="true" style="margin-right: 2px;"></i>
+                    Portainer uses <a href="https://kompose.io/" target="_blank">Kompose</a> to convert your Compose manifest to a Kubernetes compliant manifest. Be wary that not
+                    all the Compose format options are supported by Kompose at the moment.
+                  </p>
+                  <p>
+                    You can get more information about Compose file format in the
+                    <a href="https://docs.docker.com/compose/compose-file/" target="_blank">official documentation</a>.
+                  </p>
+                </span>
+                <span class="text-muted small" ng-show="!ctrl.stack.IsComposeFormat">
                   <p>
                     <i class="fa fa-info-circle blue-icon" aria-hidden="true" style="margin-right: 2px;"></i>
                     This feature allows you to deploy any kind of Kubernetes resource in this environment (Deployment, Secret, ConfigMap...).
@@ -80,6 +92,7 @@
                     You can get more information about Kubernetes file format in the
                     <a href="https://kubernetes.io/docs/concepts/overview/working-with-objects/kubernetes-objects/" target="_blank">official documentation</a>.
                   </p>
+                </span>
               </editor-description>
             </web-editor-form>
             <!-- #endregion -->

app/kubernetes/views/applications/create/createApplicationController.js

@@ -1024,9 +1024,8 @@ class KubernetesCreateApplicationController {
           if (this.application.ApplicationKind) {
             this.state.appType = this.KubernetesDeploymentTypes[this.application.ApplicationKind.toUpperCase()];
             if (this.application.StackId) {
-              if (this.application.ApplicationKind === this.KubernetesDeploymentTypes.GIT) {
               this.stack = await this.StackService.stack(this.application.StackId);
-              } else if (this.application.ApplicationKind === this.KubernetesDeploymentTypes.CONTENT) {
+              if (this.application.ApplicationKind === this.KubernetesDeploymentTypes.CONTENT) {
                 this.stackFileContent = await this.StackService.getStackFile(this.application.StackId);
               }
             }

app/portainer/models/stack.js

@@ -7,6 +7,7 @@ export function StackViewModel(data) {
   this.EndpointId = data.EndpointId;
   this.SwarmId = data.SwarmId;
   this.Env = data.Env ? data.Env : [];
+  this.IsComposeFormat = data.IsComposeFormat;
   if (data.ResourceControl && data.ResourceControl.Id !== 0) {
     this.ResourceControl = new ResourceControlViewModel(data.ResourceControl);
   }