🌱 add check and fix for triling spaces

.github/workflows/spaces.yml

@@ -0,0 +1,22 @@
+name: Trailing
+
+# Trigger the workflow on pull requests and direct pushes to any branch
+on:
+  push:
+    paths:
+      - '**/*.md'
+  pull_request:
+    paths:
+      - '**/*.md'
+
+jobs:
+  lint:
+    name: "Check Trailing"
+    runs-on: ubuntu-latest
+    # Pull requests from the same repository won't trigger this checks as they were already triggered by the push
+    if: (github.event_name == 'push' || github.event.pull_request.head.repo.full_name != github.repository)
+    steps:
+      - name: Clone the code
+        uses: actions/checkout@v4
+      - name: Run check
+        run: make test-spaces

Makefile

@@ -66,6 +66,12 @@ install: build ## Build and install the binary with the current source code. Use
 .PHONY: generate
 generate: generate-testdata generate-docs ## Update/generate all mock data. You should run this commands to update the mock data after your changes.
 	go mod tidy
+	remove-spaces
+
+.PHONY: remove-spaces
+remove-spaces:
+	@echo "Removing trailing spaces"
+	@find . -type f -name "*.md" -exec sed -i '' 's/[[:space:]]*$$//' {} +
 
 .PHONY: generate-testdata
 generate-testdata: ## Update/generate the testdata in $GOPATH/src/sigs.k8s.io/kubebuilder
@@ -160,3 +166,7 @@ test-book: ## Run the cronjob tutorial's unit tests to make sure we don't break
 .PHONY: test-license
 test-license:  ## Run the license check
 	./test/check-license.sh
+
+.PHONY: test-spaces
+test-spaces:  ## Run the trailing spaces check
+	./test/check_spaces.sh

test/check_spaces.sh

@@ -0,0 +1,25 @@
+#!/usr/bin/env 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.
+
+function validate_docs_trailing_spaces {
+  if find . -type f -name "*.md" -exec grep -Hn '[[:space:]]$' {} +; then
+      echo "Trailing spaces were found in docs files"
+      exit 1
+  fi
+
+}
+
+validate_docs_trailing_spaces