run vale in docker

.github/workflows/build.yml

@@ -68,40 +68,43 @@ jobs:
           AWS_CLOUDFRONT_ID: 0123456789ABCD
           AWS_LAMBDA_FUNCTION: DockerDocsRedirectFunction-dummy
 
-  vale:
-    if: ${{ github.event_name == 'pull_request' }}
-    runs-on: ubuntu-24.04
-    steps:
-      - uses: actions/checkout@v4
-      - uses: errata-ai/vale-action@reviewdog
-        env:
-          PIP_BREAK_SYSTEM_PACKAGES: 1
-        with:
-          files: content
-
   validate:
     runs-on: ubuntu-24.04
     strategy:
       fail-fast: false
       matrix:
         target:
           - lint
+          - vale
           - test
           - unused-media
           - test-go-redirects
           - dockerfile-lint
           - path-warnings
           - validate-vendor
     steps:
+      -
+        name: Checkout
+        uses: actions/checkout@v4
       -
         name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
       -
         name: Validate
         uses: docker/bake-action@v6
         with:
+          source: .
           files: |
             docker-bake.hcl
           targets: ${{ matrix.target }}
-          set: |
-            *.args.BUILDKIT_CONTEXT_KEEP_GIT_DIR=1
+      -
+        name: Install reviewdog
+        if: ${{ matrix.target == 'vale' && github.event_name == 'pull_request' }}
+        uses: reviewdog/action-setup@e04ffabe3898a0af8d0fb1af00c188831c4b5893 # v1.3.2
+      -
+        name: Run reviewdog for vale
+        if: ${{ matrix.target == 'vale' && github.event_name == 'pull_request' }}
+        run: |
+          cat ./tmp/vale.out | reviewdog -f=rdjsonl -name=vale -reporter=github-pr-annotations -fail-on-error=false -filter-mode=added -level=info
+        env:
+          REVIEWDOG_GITHUB_API_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.vale-rdjsonl.tmpl

@@ -0,0 +1,31 @@
+{{- /* Range over the linted files */ -}}
+
+{{- range .Files}}
+
+{{- $path := .Path -}}
+
+{{- /* Range over the file's alerts */ -}}
+
+{{- range .Alerts -}}
+
+{{- $error := "" -}}
+{{- if eq .Severity "error" -}}
+    {{- $error = "ERROR" -}}
+{{- else if eq .Severity "warning" -}}
+    {{- $error = "WARNING" -}}
+{{- else -}}
+    {{- $error = "INFO" -}}
+{{- end}}
+
+{{- /* Variables setup */ -}}
+
+{{- $line := printf "%d" .Line -}}
+{{- $col := printf "%d" (index .Span 0) -}}
+{{- $check := printf "%s" .Check -}}
+{{- $message := printf "%s" .Message -}}
+
+{{- /* Output */ -}}
+
+{"message": "[{{ $check }}] {{ $message | jsonEscape }}", "location": {"path": "{{ $path }}", "range": {"start": {"line": {{ $line }}, "column": {{ $col }}}}}, "severity": "{{ $error }}"}
+{{end -}}
+{{end -}}

Dockerfile

@@ -4,6 +4,7 @@
 ARG ALPINE_VERSION=3.21
 ARG GO_VERSION=1.24
 ARG HTMLTEST_VERSION=0.17.0
+ARG VALE_VERSION=3.11.2
 ARG HUGO_VERSION=0.141.0
 ARG NODE_VERSION=22
 ARG PAGEFIND_VERSION=1.3.0
@@ -67,6 +68,23 @@ COPY --from=build /project/public ./public
 ADD .htmltest.yml .htmltest.yml
 RUN htmltest
 
+# vale
+FROM jdkato/vale:v${VALE_VERSION} AS vale-run
+WORKDIR /src
+ARG GITHUB_ACTIONS
+RUN --mount=type=bind,target=.,rw <<EOT
+  set -e
+  mkdir /out
+  args=""
+  [ "$GITHUB_ACTIONS" = "true" ] && args="--output=.vale-rdjsonl.tmpl"
+  set -x
+  vale sync
+  vale $args content/ | tee /out/vale.out
+EOT
+
+FROM scratch AS vale
+COPY --from=vale-run /out/vale.out /
+
 # update-modules downloads and vendors Hugo modules
 FROM build-base AS update-modules
 # MODULE is the Go module path and version of the module to update

docker-bake.hcl

@@ -14,6 +14,10 @@ variable "DRY_RUN" {
   default = null
 }
 
+variable "GITHUB_ACTIONS" {
+  default = null
+}
+
 group "default" {
   targets = ["release"]
 }
@@ -36,7 +40,7 @@ target "release" {
 }
 
 group "validate" {
-  targets = ["lint", "test", "unused-media", "test-go-redirects", "dockerfile-lint", "path-warnings", "validate-vendor"]
+  targets = ["lint", "vale", "test", "unused-media", "test-go-redirects", "dockerfile-lint", "path-warnings", "validate-vendor"]
 }
 
 target "test" {
@@ -51,6 +55,15 @@ target "lint" {
   provenance = false
 }
 
+target "vale" {
+  target = "vale"
+  args = {
+    GITHUB_ACTIONS = GITHUB_ACTIONS
+  }
+  output = ["./tmp"]
+  provenance = false
+}
+
 target "unused-media" {
   target = "unused-media"
   output = ["type=cacheonly"]