provide ci and container image

.github/workflows/container-build.yml

@@ -0,0 +1,45 @@
+name: container build
+on:
+  push:
+    tags:
+      - '**'
+    branches:
+      - '**'
+      - '!master'
+  schedule:
+    - cron: '0 0 * * *'
+jobs:
+  container-build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: checkout
+        uses: actions/checkout@v3
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v2
+      - name: Log into registry
+        uses: docker/login-action@v3
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+      - name: Docker meta
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: commitlint/commitlint
+          tags: |
+            type=semver,pattern={{version}}
+            type=edge,branch=master
+            type=ref,event=branch
+            type=sha,prefix=,format=short
+      - name: Build and push container image
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          file: Dockerfile.ci
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          # disable arm build for now, because of https://github.com/nodejs/docker-node/issues/1335
+          platforms: linux/amd64 #,linux/arm64

Dockerfile.ci

@@ -0,0 +1,30 @@
+FROM docker.io/library/node:18-buster AS builder
+WORKDIR /src
+COPY . ./
+RUN yarn install && \
+    yarn run build && \
+    # Commit lint CLI packages
+    npm pack @commitlint/cli && \
+    npm pack @commitlint/config-validator && \
+    npm pack @commitlint/ensure && \
+    npm pack @commitlint/execute-rule && \
+    npm pack @commitlint/format && \
+    npm pack @commitlint/is-ignored && \
+    npm pack @commitlint/lint && \
+    npm pack @commitlint/load && \
+    npm pack @commitlint/message && \
+    npm pack @commitlint/parse && \
+    npm pack @commitlint/read && \
+    npm pack @commitlint/resolve-extends && \
+    npm pack @commitlint/rules && \
+    npm pack @commitlint/to-lines && \
+    npm pack @commitlint/top-level && \
+    npm pack @commitlint/types && \
+    # Default commitlint config
+    npm pack @commitlint/config-conventional
+
+FROM docker.io/library/node:18-buster
+COPY --from=builder /src/*.tgz ./
+RUN npm install -g *.tgz && \
+    rm -rf *.tgz
+ENTRYPOINT ["commitlint"]

docker-compose.yml

@@ -1,7 +1,9 @@
 version: '3'
 services:
   commitlint:
-    build: .
+    build:
+      context: .
+      dockerfile: Dockerfile.dev
     image: marionebl/commitlint-cubicle
     ports:
       - '8443:8443'

docs/guides-ci-setup.md

@@ -121,12 +121,30 @@ workflows:
 ## GitLab CI
 
 ```yaml
+stages: ["lint","build","test"]
 lint:commit:
+  image: registry.hub.docker.com/library/node:alpine
   stage: lint
+  before_script:
+    - apk add --no-cache git
+    - npm install --save-dev @commitlint/config-conventional @commitlint/cli
   script:
     - echo "${CI_COMMIT_MESSAGE}" | npx commitlint
 ```
 
+## GitLab CI with pre-build container
+
+```yaml
+stages: ["lint","build","test"]
+lint:commit:
+  image:
+    name: registry.hub.docker.com/commitlint/commitlint:latest
+    entrypoint: [""]
+  stage: lint
+  script:
+    - echo "${CI_COMMIT_MESSAGE}" | commitlint
+```
+
 ### 3rd party integrations
 
 #### [Codemagic](https://codemagic.io/)