diff --git a/docs/book/src/cronjob-tutorial/testdata/project/.devcontainer/post-install.sh b/docs/book/src/cronjob-tutorial/testdata/project/.devcontainer/post-install.sh
index ee950e4c2aa..daac1cac176 100644
--- a/docs/book/src/cronjob-tutorial/testdata/project/.devcontainer/post-install.sh
+++ b/docs/book/src/cronjob-tutorial/testdata/project/.devcontainer/post-install.sh
@@ -1,4 +1,18 @@
 #!/bin/bash
+# Copyright 2024 The Kubernetes Authors.
+
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+
+#     http://www.apache.org/licenses/LICENSE-2.0
+
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
 set -x
 
 curl -Lo ./kind https://kind.sigs.k8s.io/dl/v0.24.0/kind-linux-amd64
diff --git a/docs/book/src/getting-started/testdata/project/.devcontainer/post-install.sh b/docs/book/src/getting-started/testdata/project/.devcontainer/post-install.sh
index ee950e4c2aa..daac1cac176 100644
--- a/docs/book/src/getting-started/testdata/project/.devcontainer/post-install.sh
+++ b/docs/book/src/getting-started/testdata/project/.devcontainer/post-install.sh
@@ -1,4 +1,18 @@
 #!/bin/bash
+# Copyright 2024 The Kubernetes Authors.
+
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+
+#     http://www.apache.org/licenses/LICENSE-2.0
+
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
 set -x
 
 curl -Lo ./kind https://kind.sigs.k8s.io/dl/v0.24.0/kind-linux-amd64
diff --git a/testdata/project-v4-multigroup-with-deploy-image/.devcontainer/post-install.sh b/testdata/project-v4-multigroup-with-deploy-image/.devcontainer/post-install.sh
index ee950e4c2aa..daac1cac176 100644
--- a/testdata/project-v4-multigroup-with-deploy-image/.devcontainer/post-install.sh
+++ b/testdata/project-v4-multigroup-with-deploy-image/.devcontainer/post-install.sh
@@ -1,4 +1,18 @@
 #!/bin/bash
+# Copyright 2024 The Kubernetes Authors.
+
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+
+#     http://www.apache.org/licenses/LICENSE-2.0
+
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
 set -x
 
 curl -Lo ./kind https://kind.sigs.k8s.io/dl/v0.24.0/kind-linux-amd64
diff --git a/testdata/project-v4-multigroup/.devcontainer/post-install.sh b/testdata/project-v4-multigroup/.devcontainer/post-install.sh
index ee950e4c2aa..daac1cac176 100644
--- a/testdata/project-v4-multigroup/.devcontainer/post-install.sh
+++ b/testdata/project-v4-multigroup/.devcontainer/post-install.sh
@@ -1,4 +1,18 @@
 #!/bin/bash
+# Copyright 2024 The Kubernetes Authors.
+
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+
+#     http://www.apache.org/licenses/LICENSE-2.0
+
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
 set -x
 
 curl -Lo ./kind https://kind.sigs.k8s.io/dl/v0.24.0/kind-linux-amd64
diff --git a/testdata/project-v4-with-deploy-image/.devcontainer/post-install.sh b/testdata/project-v4-with-deploy-image/.devcontainer/post-install.sh
index ee950e4c2aa..daac1cac176 100644
--- a/testdata/project-v4-with-deploy-image/.devcontainer/post-install.sh
+++ b/testdata/project-v4-with-deploy-image/.devcontainer/post-install.sh
@@ -1,4 +1,18 @@
 #!/bin/bash
+# Copyright 2024 The Kubernetes Authors.
+
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+
+#     http://www.apache.org/licenses/LICENSE-2.0
+
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
 set -x
 
 curl -Lo ./kind https://kind.sigs.k8s.io/dl/v0.24.0/kind-linux-amd64
diff --git a/testdata/project-v4-with-grafana/.devcontainer/post-install.sh b/testdata/project-v4-with-grafana/.devcontainer/post-install.sh
index ee950e4c2aa..daac1cac176 100644
--- a/testdata/project-v4-with-grafana/.devcontainer/post-install.sh
+++ b/testdata/project-v4-with-grafana/.devcontainer/post-install.sh
@@ -1,4 +1,18 @@
 #!/bin/bash
+# Copyright 2024 The Kubernetes Authors.
+
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+
+#     http://www.apache.org/licenses/LICENSE-2.0
+
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
 set -x
 
 curl -Lo ./kind https://kind.sigs.k8s.io/dl/v0.24.0/kind-linux-amd64
diff --git a/testdata/project-v4/.devcontainer/post-install.sh b/testdata/project-v4/.devcontainer/post-install.sh
index ee950e4c2aa..daac1cac176 100644
--- a/testdata/project-v4/.devcontainer/post-install.sh
+++ b/testdata/project-v4/.devcontainer/post-install.sh
@@ -1,4 +1,18 @@
 #!/bin/bash
+# Copyright 2024 The Kubernetes Authors.
+
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+
+#     http://www.apache.org/licenses/LICENSE-2.0
+
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
 set -x
 
 curl -Lo ./kind https://kind.sigs.k8s.io/dl/v0.24.0/kind-linux-amd64