Merge pull request #525 from hazelops/IZE-697-ize-push-app-explain

IZE-697 added `explain` flag for `ize push`

internal/commands/push.go

@@ -2,6 +2,7 @@ package commands
 
 import (
 	"context"
+
 	"github.com/hazelops/ize/internal/config"
 	"github.com/hazelops/ize/internal/manager"
 	"github.com/hazelops/ize/internal/manager/alias"
@@ -16,6 +17,7 @@ type PushOptions struct {
 	Config  *config.Project
 	AppName string
 	App     interface{}
+	Explain bool
 }
 
 var pushLongDesc = templates.LongDesc(`
@@ -73,6 +75,8 @@ func NewCmdPush(project *config.Project) *cobra.Command {
 		},
 	}
 
+	cmd.Flags().BoolVar(&o.Explain, "explain", false, "bash alternative shown")
+
 	return cmd
 }
 
@@ -119,5 +123,9 @@ func (o *PushOptions) Run() error {
 		}
 	}
 
+	if o.Explain {
+		return m.Explain()
+	}
+
 	return m.Push(ui)
 }

internal/manager/ecs/explain.go

@@ -1,5 +1,31 @@
 package ecs
 
+import (
+	"text/template"
+
+	"github.com/hazelops/ize/internal/config"
+)
+
 func (e *Manager) Explain() error {
-	return nil
+	e.prepare()
+	return e.Project.Generate(pushEcsAppTmpl, template.FuncMap{
+		"app": func() config.Ecs {
+			return *e.App
+		},
+	})
 }
+
+var pushEcsAppTmpl = `
+# Authenticate the Docker CLI to registry
+aws ecr get-login-password --region {{.AwsRegion}} | docker login --username AWS --password-stdin {{.DockerRegistry}}
+
+# Create a repository
+aws ecr describe-repositories --repository-names {{.Namespace}}-{{app.Name}} || \
+aws ecr create-repository \
+    --repository-name {{.Namespace}}-{{app.Name}} \
+    --region {{.AwsRegion}}
+
+# Push an image to Amazon ECR
+docker push {{.DockerRegistry}}/{{.Namespace}}-{{app.Name}}:{{.Tag}} && \
+docker push {{.DockerRegistry}}/{{.Namespace}}-{{app.Name}}:{{.Env}}-latest
+`