Add checkdocs, checkrst, and checkmd make targets.

Signed-off-by: Felix Fontein <felix@fontein.de>

.github/workflows/docs.yml

@@ -25,14 +25,13 @@ jobs:
       - name: Checkout code
         uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4.0.0
 
-      - name: Install rstcheck
-        run: pip install rstcheck
+      - name: Install rstcheck and markdownlint
+        run: |
+          pip install rstcheck
+          sudo gem install mdl
 
       - name: Run rstcheck on all RST files
-        run: rstcheck $(find -name '*.rst')
-
-      - name: Install markdownlint
-        run: sudo gem install mdl
+        run: make checkrst
 
       - name: Run mdl on all MD files
-        run: mdl $(find -name '*.md')
+        run: make checkmd

Makefile

@@ -45,6 +45,20 @@ vendor:
 vet:
 	$(GO) vet ./...
 
+
+.PHONY: checkdocs
+checkdocs: checkrst checkmd
+
+.PHONY: checkrst
+RST_FILES=$(shell find . -name '*.rst' | grep -v /vendor/ | sort)
+checkrst: $(RST_FILES)
+	rstcheck $^
+
+.PHONY: checkmd
+MD_FILES=$(shell find . -name '*.md' | grep -v /vendor/ | sort)
+checkmd: $(MD_FILES)
+	mdl $^
+
 .PHONY: test
 test: vendor
 	gpg --import pgp/sops_functional_tests_key.asc 2>&1 1>/dev/null || exit 0