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github-actions-templates | Evokore

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github-actions-templates

Create production-ready GitHub Actions workflows for automated

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# GitHub Actions Templates

Production-ready GitHub Actions workflow patterns for testing, building, and deploying applications.

## Purpose

Create efficient, secure GitHub Actions workflows for continuous integration and deployment across various tech stacks.

## When to Use

- Automate testing and deployment
- Build Docker images and push to registries
- Deploy to Kubernetes clusters
- Run security scans
- Implement matrix builds for multiple environments

## Common Workflow Patterns

### Pattern 1: Test Workflow

```yaml
name: Test

on:
  push:
    branches: [main, develop]
  pull_request:
    branches: [main]

jobs:
  test:
    runs-on: ubuntu-latest

strategy:
      matrix:
        node-version: [18.x, 20.x]

steps:
      - uses: actions/checkout@v4

- name: Use Node.js ${{ matrix.node-version }}
        uses: actions/setup-node@v4
        with:
          node-version: ${{ matrix.node-version }}
          cache: "npm"

- name: Install dependencies
        run: npm ci

- name: Run linter
        run: npm run lint

- name: Run tests
        run: npm test

- name: Upload coverage
        uses: codecov/codecov-action@v3
        with:
          files: ./coverage/lcov.info
```

**Reference:** See `assets/test-workflow.yml`

### Pattern 2: Build and Push Docker Image

```yaml
name: Build and Push

on:
  push:
    branches: [main]
    tags: ["v*"]

env:
  REGISTRY: ghcr.io
  IMAGE_NAME: ${{ github.repository }}

jobs:
  build:
    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write

steps:
      - uses: actions/checkout@v4

- name: Log in to Container Registry
        uses: docker/login-action@v3
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

- name: Extract metadata
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
          tags: |
            type=ref,event=branch
            type=ref,event=pr
            type=semver,pattern={{version}}
            type=semver,pattern={{major}}.{{minor}}

- name: Build and push
        uses: docker/build-push-action@v5
        with:
          context: .
          push: true
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          cache-from: type=gha
          cache-to: type=gha,mode=max
```

**Reference:** See `assets/deploy-workflow.yml`

### Pattern 3: Deploy to Kubernetes

```yaml
name: Deploy to Kubernetes

on:
  push:
    branches: [main]

jobs:
  deploy:
    runs-on: ubuntu-latest

steps:
      - uses: actions/checkout@v4

- name: Configure AWS credentials
        uses: aws-actions/configure-aws-credentials@v4
        with:
          aws-access-key-id: ${{ secrets.AWS_ACCESS_KEY_ID }}
          aws-secret-access-key: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
          aws-region: us-west-2

- name: Update kubeconfig
        run: |
          aws eks update-kubeconfig --name production-cluster --region us-west-2

- name: Deploy to Kubernetes
        run: |
          kubectl apply -f k8s/
          kubectl rollout status deployment/my-app -n production
          kubectl get services -n production

- name: Verify deployment
        run: |
          kubectl get pods -n production
          kubectl describe deployment my-app -n production
```

### Pattern 4: Matrix Build

```yaml
name: Matrix Build

on: [push, pull_request]

jobs:
  build:
    runs-on: ${{ matrix.os }}

strategy:
      matrix:
        os: [ubuntu-latest, macos-latest, windows-latest]
        python-version: ["3.9", "3.10", "3.11", "3.12"]

steps:
      - uses: actions/checkout@v4

- name: Set up Python
        uses: actions/setup-python@v5
        with:
          python-version: ${{ matrix.python-version }}

- name: Install dependencies
        run: |
          python -m pip install --upgrade pip
          pip install -r requirements.txt

- name: Run tests
        run: pytest
```

**Reference:** See `assets/matrix-build.yml`

## Workflow Best Practices

1. **Use specific action versions** (@v4, not @latest)
2. **Cache dependencies** to speed up builds
3. **Use secrets** for sensitive data
4. **Implement status checks** on PRs
5. **Use matrix builds** for multi-version testing
6. **Set appropriate permissions**
7. **Use reusable workflows** for common patterns
8. **Implement approval gates** for production
9. **Add notification steps** for failures
10. **Use self-hosted runners** for sensitive workloads

## Reusable Workflows

```yaml
# .github/workflows/reusable-test.yml
name: Reusable Test Workflow

on:
  workflow_call:
    inputs:
      node-version:
        required: true
        type: string
    secrets:
      NPM_TOKEN:
        required: true

jobs:
  test:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: actions/setup-node@v4
        with:
          node-version: ${{ inputs.node-version }}
      - run: npm ci
      - run: npm test
```

**Use reusable workflow:**

```yaml
jobs:
  call-test:
    uses: ./.github/workflows/reusable-test.yml
    with:
      node-version: "20.x"
    secrets:
      NPM_TOKEN: ${{ secrets.NPM_TOKEN }}
```

## Security Scanning

```yaml
name: Security Scan

on:
  push:
    branches: [main]
  pull_request:
    branches: [main]

jobs:
  security:
    runs-on: ubuntu-latest

steps:
      - uses: actions/checkout@v4

- name: Run Trivy vulnerability scanner
        uses: aquasecurity/trivy-action@master
        with:
          scan-type: "fs"
          scan-ref: "."
          format: "sarif"
          output: "trivy-results.sarif"

- name: Upload Trivy results to GitHub Security
        uses: github/codeql-action/upload-sarif@v2
        with:
          sarif_file: "trivy-results.sarif"

- name: Run Snyk Security Scan
        uses: snyk/actions/node@master
        env:
          SNYK_TOKEN: ${{ secrets.SNYK_TOKEN }}
```

## Deployment with Approvals

```yaml
name: Deploy to Production

on:
  push:
    tags: ["v*"]

jobs:
  deploy:
    runs-on: ubuntu-latest
    environment:
      name: production
      url: https://app.example.com

steps:
      - uses: actions/checkout@v4

- name: Deploy application
        run: |
          echo "Deploying to production..."
          # Deployment commands here

- name: Notify Slack
        if: success()
        uses: slackapi/slack-github-action@v1
        with:
          webhook-url: ${{ secrets.SLACK_WEBHOOK }}
          payload: |
            {
              "text": "Deployment to production completed successfully!"
            }
```

## Reference Files

- `assets/test-workflow.yml` - Testing workflow template
- `assets/deploy-workflow.yml` - Deployment workflow template
- `assets/matrix-build.yml` - Matrix build template
- `references/common-workflows.md` - Common workflow patterns

## Related Skills

- `gitlab-ci-patterns` - For GitLab CI workflows
- `deployment-pipeline-design` - For pipeline architecture
- `secrets-management` - For secrets handling

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