ci(docs): Require up-to-date function docs

Signed-off-by: Dave Henderson <[email protected]>

.github/workflows/docs.yml

@@ -0,0 +1,23 @@
+name: Docs Checks
+on:
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  check-func-docs:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Install gomplate
+        run: |
+          docker create --name gomplate hairyhenderson/gomplate
+          docker cp gomplate:/gomplate .
+          sudo mv gomplate /usr/local/bin
+      - name: Make sure function docs are up-to-date
+        run: |
+          make --always-make gen-func-docs
+          git diff --exit-code
+          if [ $? -ne 0 ]; then
+            echo "Function docs are out of date. Please run 'make gen-func-docs' locally and commit the changes."
+            exit 1
+          fi

Makefile

@@ -213,6 +213,9 @@ gen-docs: docs/themes/hugo-theme-relearn
 docs/content/functions/%.md: docs-src/content/functions/%.yml docs-src/content/functions/func_doc.md.tmpl
 	gomplate -d data=$< -f docs-src/content/functions/func_doc.md.tmpl -o $@
 
+# run the above target for all files found in docs-src/content/functions/*.yml
+gen-func-docs: $(shell find docs-src/content/functions -name "*.yml" | sed -e 's#docs-src#docs#' -e 's#\.yml#\.md#')
+
 # this target doesn't usually get used - it's mostly here as a reminder to myself
 # hint: make sure CLOUDCONVERT_API_KEY is set ;)
 gomplate.png: gomplate.svg
@@ -224,6 +227,6 @@ lint:
 ci-lint:
 	@golangci-lint run --verbose --max-same-issues=0 --max-issues-per-linter=0 --out-format=github-actions
 
-.PHONY: gen-changelog clean test build-x build-release build test-integration-docker gen-docs lint clean-images clean-containers docker-images test-remote-windows integration testbins-windows
+.PHONY: gen-changelog clean test build-x build-release build test-integration-docker gen-docs lint clean-images clean-containers docker-images test-remote-windows integration testbins-windows gen-func-docs
 .DELETE_ON_ERROR:
 .SECONDARY: