Add CI/CD workflows and Docker configuration

- Add build workflow for PR validation (linting, tests, DRF schema)
- Add image-push workflow for Docker build and GitHub registry
- Add Dockerfile with security best practices and health checks
- Add development dependencies and linting configuration
- Add .dockerignore for optimized builds

Author: manduinca

.flake8

@@ -0,0 +1,32 @@
+[flake8]
+max-line-length = 88
+max-complexity = 10
+exclude = 
+    .git,
+    __pycache__,
+    .venv,
+    .env,
+    env,
+    venv,
+    migrations,
+    .tox,
+    build,
+    dist,
+    *.egg-info
+
+# Error codes to ignore
+ignore = 
+    # Line too long (handled by black)
+    E501,
+    # Line break before binary operator (conflicts with black)
+    W503,
+    # Line break after binary operator (conflicts with black)
+    W504
+
+per-file-ignores =
+    # Allow unused imports in __init__.py files
+    __init__.py:F401
+    # Allow long lines in settings files
+    */settings.py:E501
+    # Allow star imports in settings files
+    */settings.py:F403,F405

.github/workflows/build.yml

@@ -0,0 +1,94 @@
+name: Build
+
+on:
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    
+    strategy:
+      matrix:
+        python-version: [3.13]
+
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v4
+
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v4
+      with:
+        python-version: ${{ matrix.python-version }}
+
+    - name: Cache pip dependencies
+      uses: actions/cache@v3
+      with:
+        path: ~/.cache/pip
+        key: ${{ runner.os }}-pip-${{ hashFiles('requirements.txt') }}
+        restore-keys: |
+          ${{ runner.os }}-pip-
+
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install -r requirements.txt
+
+    - name: Install development dependencies
+      run: |
+        pip install flake8 black isort
+
+    - name: Check code style with Black
+      run: |
+        black --check --diff .
+
+    - name: Check imports with isort
+      run: |
+        isort --check-only --diff .
+
+    - name: Lint with flake8
+      run: |
+        # Stop the build if there are Python syntax errors or undefined names
+        flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
+        # Exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
+        flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
+
+    - name: Validate Django migrations
+      run: |
+        python manage.py makemigrations --check --dry-run
+      env:
+        SECRET_KEY: 'test-secret-key-for-ci'
+        DEBUG: 'True'
+        DB_NAME: ':memory:'
+        ALLOWED_HOSTS: 'localhost,127.0.0.1'
+
+    - name: Check Django models and migrations
+      run: |
+        python manage.py check --tag models
+      env:
+        SECRET_KEY: 'test-secret-key-for-ci'
+        DEBUG: 'True'
+        DB_NAME: ':memory:'
+        ALLOWED_HOSTS: 'localhost,127.0.0.1'
+
+    - name: Validate DRF API schema
+      run: |
+        python manage.py spectacular --color --file schema_test.yml
+      env:
+        SECRET_KEY: 'test-secret-key-for-ci'
+        DEBUG: 'True'
+        DB_NAME: ':memory:'
+        ALLOWED_HOSTS: 'localhost,127.0.0.1'
+
+    - name: Run unit tests
+      run: |
+        python manage.py test --verbosity=2
+      env:
+        SECRET_KEY: 'test-secret-key-for-ci'
+        DEBUG: 'True'
+        DB_NAME: ':memory:'
+        DB_USER: 'test_user'
+        DB_PASSWORD: 'test_password'
+        DB_HOST: 'localhost'
+        DB_PORT: '5432'
+        ALLOWED_HOSTS: 'localhost,127.0.0.1'

.github/workflows/image-push.yml

@@ -0,0 +1,60 @@
+name: Image Push
+
+on:
+  push:
+    branches: [ main ]
+  workflow_dispatch:
+
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: ${{ github.repository }}
+
+jobs:
+  build-and-push:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v4
+
+    - name: Set up Docker Buildx
+      uses: docker/setup-buildx-action@v3
+
+    - 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=raw,value=latest,enable={{is_default_branch}}
+          type=sha,prefix={{branch}}-
+
+    - name: Build and push Docker image
+      uses: docker/build-push-action@v5
+      with:
+        context: .
+        platforms: linux/amd64,linux/arm64
+        push: true
+        tags: ${{ steps.meta.outputs.tags }}
+        labels: ${{ steps.meta.outputs.labels }}
+        cache-from: type=gha
+        cache-to: type=gha,mode=max
+
+    - name: Generate artifact attestation
+      uses: actions/attest-build-provenance@v1
+      with:
+        subject-name: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME}}
+        subject-digest: ${{ steps.build.outputs.digest }}
+        push-to-registry: true

Dockerfile

@@ -0,0 +1,44 @@
+# Use Python 3.13 slim image
+FROM python:3.13-slim
+
+# Set environment variables
+ENV PYTHONDONTWRITEBYTECODE=1 \
+    PYTHONUNBUFFERED=1 \
+    PIP_NO_CACHE_DIR=1 \
+    PIP_DISABLE_PIP_VERSION_CHECK=1
+
+# Set work directory
+WORKDIR /app
+
+# Install system dependencies
+RUN apt-get update \
+    && apt-get install -y --no-install-recommends \
+        postgresql-client \
+        build-essential \
+        libpq-dev \
+    && rm -rf /var/lib/apt/lists/*
+
+# Install Python dependencies
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+
+# Copy project
+COPY . .
+
+# Create non-root user
+RUN adduser --disabled-password --gecos '' appuser \
+    && chown -R appuser:appuser /app
+USER appuser
+
+# Collect static files
+RUN python manage.py collectstatic --noinput
+
+# Expose port
+EXPOSE 8000
+
+# Health check
+HEALTHCHECK --interval=30s --timeout=30s --start-period=5s --retries=3 \
+    CMD python manage.py check --deploy || exit 1
+
+# Run the application
+CMD ["python", "manage.py", "runserver", "0.0.0.0:8000"]

requirements-dev.in

@@ -3,3 +3,9 @@
 
 # Development tools
 pip-tools>=7.0.0
+
+# Code quality and testing
+black>=23.0.0
+isort>=5.12.0
+flake8>=6.0.0
+coverage>=7.0.0