diff --git a/air.toml b/air.toml
new file mode 100644
index 0000000..af2805a
--- /dev/null
+++ b/air.toml
@@ -0,0 +1,8 @@
+# air.toml
+root = "." # 监听的项目目录
+
+[build]
+cmd = "echo 'File changed, running KCL...' && kcl main.k" # 自定义命令
+bin = ""                                                  # 不生成二进制文件
+exclude_dir = ["vendor", "node_modules"]                  # 排除某些目录
+include_ext = ["k"]                                       # 监听 `.k` 文件
diff --git a/base/deploy.k b/base/deploy.k
index e6efce7..a8f58e3 100644
--- a/base/deploy.k
+++ b/base/deploy.k
@@ -1,22 +1,44 @@
 import k8s.api.apps.v1 as appsv1
+import k8s.api.core.v1 as corev1
 
-a = appsv1.Deployment {
-    apiVersion = "apps/v1"
-    kind = "Deployment"
-    metadata = {
-        name = "nginx"
-        labels.app = "nginx"
+schema App:
+    """App schema"""
+    name: str
+    replicas: int = 1
+    image: str
+    port: int
+
+appRender = lambda a: App {
+    deployment = appsv1.Deployment {
+        apiVersion = "apps/v1"
+        kind = "Deployment"
+        metadata = {
+            name = a.name
+            labels.app = a.name
+        }
+        spec = {
+            replicas = a.replicas
+            selector.matchLabels = metadata.labels
+            template.metadata.labels = metadata.labels
+            template.spec.containers = [
+                {
+                    name = a.name
+                    image = a.image
+                    ports = [{containerPort = a.port}]
+                }
+            ]
+        }
     }
-    spec = {
-        replicas = 3
-        selector.matchLabels = metadata.labels
-        template.metadata.labels = metadata.labels
-        template.spec.containers = [
-            {
-                name = metadata.name
-                image = "nginx:1.14.2"
-                ports = [{ containerPort = 80 }]
-            }
-        ]
+    service = corev1.Service {
+        apiVersion = "v1"
+        kind = "Service"
+        metadata = {
+            name = a.name
+        }
+        spec = {
+            selector.app = a.name
+            ports = [{port = a.port, targetPort = a.port}]
+        }
     }
+    [deployment, service]
 }
diff --git a/main.k b/main.k
index fa7048e..2a5d391 100644
--- a/main.k
+++ b/main.k
@@ -1 +1,20 @@
-The_first_kcl_program = 'Hello World!'
\ No newline at end of file
+import base
+
+import manifests
+
+base.App {
+    name = "myapp"
+    replicas = 2
+    image = "myimage"
+    port = 8080
+}
+base.App {
+    name = "myapp122"
+    replicas = 2
+    image = "myimage"
+    port = 8080
+}
+
+
+# base.appRender(a)
+manifests.yaml_stream([base.appRender(a) for a in base.App.instances()])
diff --git a/tmp/build-errors.log b/tmp/build-errors.log
new file mode 100644
index 0000000..cba9c83
--- /dev/null
+++ b/tmp/build-errors.log
@@ -0,0 +1 @@
+exit status 1exit status 2exit status 1exit status 1exit status 1exit status 1
\ No newline at end of file