CI, lint & formatter

.dockerignore

@@ -0,0 +1,7 @@
+__pycache__
+*.pyc
+*.pyo
+*.pyd
+.Python
+.env
+.git

.github/workflows/ci.yml

@@ -0,0 +1,141 @@
+name: CI Pipeline
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  validate:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v2
+
+      - name: Set up Python
+        uses: actions/setup-python@v2
+        with:
+          python-version: '3.12'
+
+      - name: Install dependencies
+        run: |
+          pip install pipenv
+          pipenv install --dev
+
+      - name: Validate Python code with flake8
+        run: pipenv run flake8 --select BLK smartmeter.py
+
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - platform: linux/amd64
+            base: distroless
+          - platform: linux/arm/v6
+            base: alpine
+          - platform: linux/arm/v7
+            base: alpine
+          - platform: linux/arm64
+            base: distroless
+    permissions:
+      contents: read
+      packages: write
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+      - id: lower-repo
+        run: |
+          echo "IMAGE_NAME=${GITHUB_REPOSITORY@L}" >> $GITHUB_OUTPUT
+      - name: Extract metadata (tags, labels) for Docker
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ${{ env.REGISTRY }}/${{ steps.lower-repo.outputs.IMAGE_NAME }}
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+      - name: Log in to the Container registry
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+      - name: Build
+        if: github.event_name == 'pull_request'
+        id: build
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          platforms: ${{ matrix.platform }}
+          file: ./Dockerfile
+          labels: ${{ steps.meta.outputs.labels }}
+          outputs: type=docker,name=${{ env.REGISTRY }}/${{ steps.lower-repo.outputs.IMAGE_NAME }}
+          build-args: BASE=${{ matrix.base }}
+      - name: Build and push
+        if: github.event_name != 'pull_request'
+        id: build_push
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          platforms: ${{ matrix.platform }}
+          file: ./Dockerfile
+          labels: ${{ steps.meta.outputs.labels }}
+          outputs: type=image,name=${{ env.REGISTRY }}/${{ steps.lower-repo.outputs.IMAGE_NAME }},push-by-digest=true,name-canonical=true,push=true
+          build-args: BASE=${{ matrix.base }}
+      - name: Export digest
+        if: github.event_name != 'pull_request'
+        run: |
+          mkdir -p /tmp/digests
+          digest="${{ steps.build.outputs.digest }}"
+          touch "/tmp/digests/${digest#sha256:}"
+      - name: Upload digest
+        if: github.event_name != 'pull_request'
+        uses: actions/upload-artifact@v3
+        with:
+          name: digests
+          path: /tmp/digests/*
+          if-no-files-found: error
+          retention-days: 1
+
+  merge:
+    runs-on: ubuntu-latest
+    if: github.event_name != 'pull_request'
+    permissions:
+      contents: read
+      packages: write
+    needs:
+      - build
+    steps:
+      - name: Download digests
+        uses: actions/download-artifact@v3
+        with:
+          name: digests
+          path: /tmp/digests
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+      - id: lower-repo
+        run: |
+          echo "IMAGE_NAME=${GITHUB_REPOSITORY@L}" >> $GITHUB_OUTPUT
+      - name: Extract metadata (tags, labels) for Docker
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ${{ env.REGISTRY }}/${{ steps.lower-repo.outputs.IMAGE_NAME }}
+      - name: Log in to the Container registry
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+      - name: Create manifest list and push
+        working-directory: /tmp/digests
+        run: |
+          docker buildx imagetools create $(jq -cr '.tags | map("-t " + .) | join(" ")' <<< "$DOCKER_METADATA_OUTPUT_JSON") \
+            $(printf '${{ env.REGISTRY }}/${{ steps.lower-repo.outputs.IMAGE_NAME }}@sha256:%s ' *)
+      - name: Inspect image
+        run: |
+          docker buildx imagetools inspect ${{ env.REGISTRY }}/${{ steps.lower-repo.outputs.IMAGE_NAME }}:${{ steps.meta.outputs.version }}

Pipfile

@@ -9,3 +9,6 @@ urllib3 = "*"
 paho-mqtt = "*"
 
 [dev-packages]
+flake8 = "*"
+black = "*"
+flake8-black = "*"