feat: Gitea Actions CI/CD pipeline

.gitea/workflows/ci-cd.yml

@@ -0,0 +1,55 @@
+name: CI/CD
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+jobs:
+  lint-test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: "3.12"
+
+      - name: Install dependencies
+        run: pip install ruff mypy -r requirements.txt
+
+      - name: Lint
+        run: ruff check .
+
+      - name: Type check
+        run: mypy check_versions.py --ignore-missing-imports
+
+  build-push:
+    runs-on: ubuntu-latest
+    needs: lint-test
+    if: github.ref == 'refs/heads/main'
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Build image
+        run: |
+          docker build -t ${{ secrets.REGISTRY_URL }}/k8s-version-tracker:${{ github.sha }} \
+                       -t ${{ secrets.REGISTRY_URL }}/k8s-version-tracker:latest .
+
+      - name: Push image
+        run: |
+          echo "${{ secrets.REGISTRY_PASSWORD }}" | \
+            docker login ${{ secrets.REGISTRY_URL }} -u ${{ secrets.REGISTRY_USERNAME }} --password-stdin
+          docker push ${{ secrets.REGISTRY_URL }}/k8s-version-tracker:${{ github.sha }}
+          docker push ${{ secrets.REGISTRY_URL }}/k8s-version-tracker:latest
+
+      - name: Notify Mattermost
+        if: always()
+        run: |
+          STATUS="${{ job.status }}"
+          EMOJI=$([ "$STATUS" = "success" ] && echo ":white_check_mark:" || echo ":x:")
+          curl -s -X POST "${{ secrets.MATTERMOST_WEBHOOK_URL }}" \
+            -H "Content-Type: application/json" \
+            -d "{\"text\": \"$EMOJI k8s-version-tracker build **$STATUS** — \`${{ github.sha }}\`\"}"