chore: add build workflow

.commitlintrc

@@ -0,0 +1,5 @@
+{
+  "extends": [
+    "@commitlint/config-conventional"
+  ]
+}

.github/workflows/build-app-image-and-run-command.yml

@@ -142,6 +142,11 @@ on:
           Useful for other events like `workflow_run`, see https://docs.github.com/en/actions/reference/workflows-and-actions/events-that-trigger-workflows
         required: false
         type: string
+      # See: https://github.com/actions/checkout
+      checkout_fetch_depth:
+        description: Number of commits to fetch. 0 indicates all history for all branches and tags.
+        type: number
+        required: false
 
 jobs:
   build_image:
@@ -194,6 +199,7 @@ jobs:
       - uses: actions/checkout@v5
         with:
           ref: ${{ inputs.git_ref }}
+          fetch-depth: ${{ inputs.checkout_fetch_depth }}
 
       - name: Configure AWS credentials
         if: ${{ inputs.aws_role_to_assume }}

.github/workflows/build-in-container.yml

@@ -0,0 +1,16 @@
+name: Build
+
+on:
+  pull_request:
+
+jobs:
+   build-test-image-and-run-checks:
+    name: Build test image and run checks
+    uses: ./.github/workflows/build-app-image-and-run-command.yml
+    with:
+      checkout_fetch_depth: 0
+      image_target: base
+      image_tags: rails-cicd-pipelines
+      run_command: |
+        docker run rails-cicd-pipelines \
+          npx commitlint --from ${{ github.event.pull_request.base.sha }} --to ${{ github.event.pull_request.head.sha }} --verbose

Dockerfile

@@ -0,0 +1,9 @@
+FROM node:24.11-alpine AS base
+
+WORKDIR /usr/src
+
+RUN apk add git
+
+COPY package.json package-lock.json ./
+RUN npm install
+COPY . ./