introduce PR labeler GHA workflow and configuration

Signed-off-by: Shaun Thompson <[email protected]>

Author: thompson-shaun

.github/dependabot.yml

@@ -11,5 +11,5 @@ updates:
       # trigger a new version: https://github.com/docker/buildx/pull/2222#issuecomment-1919092153
       - dependency-name: "docker/docs"
     labels:
-      - "dependencies"
+      - "area/dependencies"
       - "bot"

.github/labeler.yml

@@ -0,0 +1,155 @@
+# Add 'project' label to changes in basic project documentation and .github folder, excluding .github/workflows
+area/project:
+  - all:
+      - changed-files:
+          - any-glob-to-any-file:
+              - .github/**
+              - LICENSE
+              - AUTHORS
+              - MAINTAINERS
+              - PROJECT.md
+              - README.md
+              - .gitignore
+              - codecov.yml
+          - all-globs-to-all-files: "!.github/workflows/*"
+
+# Add 'ci' label to changes in the .github/workflows folder
+area/ci:
+  - changed-files:
+      - any-glob-to-any-file: ".github/workflows/**"
+
+# Add 'tests' label to changes in test files
+area/testing:
+  - changed-files:
+      - any-glob-to-any-file:
+          - tests/**
+          - "**/*_test.go"
+
+# area:api
+area/api:
+  - changed-files:
+      - any-glob-to-any-file: "api/**"
+
+# area:storage
+area/storage:
+  - changed-files:
+      - any-glob-to-any-file:
+          - "cache/**"
+          - "snapshot/**"
+      - all-globs-to-all-files: "!cache/remotecache/**"
+
+# area:remotecache
+area/remotecache:
+  - changed-files:
+      - any-glob-to-any-file: "cache/remotecache/**"
+
+# area:client
+area/client:
+  - changed-files:
+      - any-glob-to-any-file: "client/**"
+
+# area:llb
+area/llb:
+  - changed-files:
+      - any-glob-to-any-file: "client/llb/**"
+
+# area:buildctl
+area/buildctl:
+  - changed-files:
+      - any-glob-to-any-file: "cmd/buildctl/**"
+
+# area:buildkitd
+area/buildkitd:
+  - changed-files:
+      - any-glob-to-any-file: "cmd/buildkitd/**"
+
+# area:dependencies
+area/dependencies:
+  - changed-files:
+      - any-glob-to-any-file:
+          - go.mod
+          - go.sum
+          - vendor/**
+          - tools/**
+
+# area:docs
+area/docs:
+  - changed-files:
+      - any-glob-to-any-file:
+          - "docs/**"
+          - "frontend/dockerfile/docs/**"
+
+# area:dockerfile
+area/dockerfile:
+  - changed-files:
+      - any-glob-to-any-file: "frontend/dockerfile/**"
+
+# area:dockerfile/checks
+area/dockerfile/checks:
+  - changed-files:
+      - any-glob-to-any-file:
+          - "frontend/dockerfile/linter"
+          - "frontend/dockerfile/subrequests/lint"
+
+# area:examples
+area/examples:
+  - changed-files:
+      - any-glob-to-any-file: "examples/**"
+
+# area:executor
+area/executor:
+  - changed-files:
+      - any-glob-to-any-file: "executor/**"
+
+# area:exporter
+area/exporter:
+  - changed-files:
+      - any-glob-to-any-file: "exporter/**"
+
+# area:frontend
+area/frontend:
+  - changed-files:
+      - any-glob-to-any-file: "frontend/**"
+
+# area:hack
+area/hack:
+  - changed-files:
+      - any-glob-to-any-file: "hack/**"
+
+# area:session
+area/session:
+  - changed-files:
+      - any-glob-to-any-file: "session/**"
+
+# area:solver
+area/solver:
+  - changed-files:
+      - any-glob-to-any-file:
+          - "control/**"
+          - "solver/**"
+
+# area:source
+area/source:
+  - changed-files:
+      - any-glob-to-any-file: "source/**"
+
+# area:sourcepolicy
+area/sourcepolicy:
+  - changed-files:
+      - any-glob-to-any-file: "sourcepolicy/**"
+
+# area:util
+area/util:
+  - changed-files:
+      - any-glob-to-any-file: "util/**"
+
+# area:worker
+area/worker:
+  - changed-files:
+      - any-glob-to-any-file: "worker/**"
+
+# area:windows
+area/windows:
+  - changed-files:
+      - any-glob-to-any-file:
+          - "**/*_windows.go"

.github/workflows/labeler.yml

@@ -0,0 +1,19 @@
+name: labeler
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+on:
+  pull_request_target:
+
+jobs:
+  labeler:
+    permissions:
+      contents: read
+      pull-requests: write
+    runs-on: ubuntu-latest
+    steps:
+      -
+        name: Run
+        uses: actions/labeler@v5