Lab3 is done

.github/workflows/python-ci.yml

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+name: Python CI & Docker Build
+
+on:
+  push:
+    branches: [ main, dev, lab3 ]
+    tags: [ 'v*' ]
+  pull_request:
+    branches: [ main ]
+
+permissions:
+  contents: read
+  packages: write
+
+jobs:
+  test:
+    name: Test & Lint
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        python-version: ["3.9", "3.10", "3.11"]
+
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v4
+
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v5
+      with:
+        python-version: ${{ matrix.python-version }}
+
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install -r app_python/requirements.txt
+        pip install ruff pytest
+
+    - name: Lint with Ruff
+      run: ruff check .
+
+    - name: Run tests
+      run: pytest app_python/tests/ --verbose -v
+
+    - name: Format check
+      run: ruff format --check .
+
+  security:
+    name: Snyk Security Scan
+    runs-on: ubuntu-latest
+    if: github.event_name != 'pull_request'
+    defaults:
+      run:
+        working-directory: ./app_python
+    steps:
+    - uses: actions/checkout@v4
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install -r requirements.txt
+    - name: Snyk CLI
+      uses: snyk/actions/python-3.11@master
+      env:
+        SNYK_TOKEN: ${{ secrets.SNYK_TOKEN }}
+      with:
+        args: --severity-threshold=critical --skip-unresolved
+      continue-on-error: true
+
+
+  docker:
+    name: Build & Push Docker
+    needs: [ test, security ] # Runs only if test & security passed
+    runs-on: ubuntu-latest
+    if: github.event_name != 'pull_request'  # Dont push pr to docker hub
+
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v4
+
+    - name: Docker meta
+      id: meta
+      uses: docker/metadata-action@v5
+      with:
+        images: ${{ secrets.DOCKER_USERNAME }}/testiks
+        tags: |
+          type=raw,value=latest,enable={{is_default_branch}}
+          type=raw,value={{date 'YYYY.MM'}},enable={{is_default_branch}}
+          type=ref,event=branch
+
+
+    - name: Set up Docker Buildx
+      uses: docker/setup-buildx-action@v3
+
+    - name: Login to Docker Hub
+      uses: docker/login-action@v3
+      with:
+        username: ${{ secrets.DOCKER_USERNAME }}
+        password: ${{ secrets.DOCKERHUB_TOKEN }}
+
+    - name: Build and push Docker image
+      uses: docker/build-push-action@v5
+      with:
+        context: ./app_python/
+        push: true
+        tags: ${{ steps.meta.outputs.tags }}
+        cache-from: type=gha
+        cache-to: type=gha,mode=max

app_python/.dockerignore

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+# Python
+__pycache__/
+*.pyc
+*.pyo
+
+# Virtual environments
+venv/
+.venv/
+
+# Git
+.git/
+.gitignore
+
+# IDE
+.vscode/
+.idea/
+
+# OS
+.DS_Store
+
+# Docs & tests (если не нужны в контейнере)
+README.md
+tests/
+docs/

app_python/.gitignore

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+**/myenv/
+**/__pycache__/
+*cache*
+**/*cache/

app_python/Dockerfile

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+FROM python:3.12-slim
+
+ENV PYTHONDONTWRITEBYTECODE=1 \
+    PYTHONUNBUFFERED=1
+
+# Non-root user
+RUN groupadd -r appuser && useradd -r -g appuser appuser
+
+# Install deps first
+WORKDIR /app
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+
+
+COPY app.py .
+RUN chown -R appuser:appuser /app
+USER appuser
+
+EXPOSE 8000
+
+# Run app finally
+CMD ["python", "app.py"]

app_python/README.md

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+# DevOps Info Service
+A lightweight demo Python web application that system information via HTTP endpoints
+
+### Prerequisites
+Python 3.10+
+Flask 3.1.0
+
+### Installation
+```bash
+python3 -m venv venv
+source venv/bin/activate
+pip install -r requirements.txt
+```
+
+### Running the Application
+```bash
+python3 app.py
+# Or with custom config
+PORT=8080 python3 app.py
+```
+
+### API Endpoints
+There are few main endpoints:
+- `GET /` - Service and system information
+- `GET /health` - Health check.
+
+### Configuration
+
+| Variable | Value  | Purpose                              |
+| -------- | ------ | ------------------------------------ |
+| Host     | string | A host to run app on                 |
+| Port     | int    | A port to assign for web application |
+| Debug    | bool   | Should debug output be enabled       |
+
+## Docker
+This application can be run in a containerized environment with Docker
+
+### Build the image locally
+To build the Docker image, use the Docker build command from the project directory, specifying the Dockerfile and an image name with a tag
+```bash
+cd app_python
+docker build -t <image-name> .
+```
+
+### Run a container
+To run the application, start a container from the built image and map the container port to a port on the host machine so the application can be accessed locally
+```bash
+docker run -p<any-port-on-your-machine>:5000 <created-image-name>
+```
+
+### Pull from Docker Hub
+The pre-built image is also available on Docker Hub and can be pulled using the standard Docker pull command with the repository name and desired tag
+```bash
+docker pull cacucoh/testiks:1.0
+```

app_python/app.py

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+import os
+import socket
+import platform
+import logging
+from datetime import datetime, timezone
+
+from flask import Flask, jsonify, request
+
+logging.basicConfig(
+    level=logging.INFO, format="%(asctime)s - %(name)s - %(levelname)s - %(message)s"
+)
+logger = logging.getLogger(__name__)
+
+
+app = Flask(__name__)
+
+HOST = os.getenv("HOST", "0.0.0.0")
+PORT = int(os.getenv("PORT", 5000))
+DEBUG = os.getenv("DEBUG", "False").lower() == "true"
+
+START_TIME = datetime.now(timezone.utc)
+
+
+def get_uptime():
+    delta = datetime.now(timezone.utc) - START_TIME
+    seconds = int(delta.total_seconds())
+    hours = seconds // 3600
+    minutes = (seconds % 3600) // 60
+    return {"seconds": seconds, "human": f"{hours} hours, {minutes} minutes"}
+
+
+def get_system_info():
+    return {
+        "hostname": socket.gethostname(),
+        "platform": platform.system(),
+        "platform_version": platform.version(),
+        "architecture": platform.machine(),
+        "cpu_count": os.cpu_count(),
+        "python_version": platform.python_version(),
+    }
+
+
+@app.route("/health", methods=["GET"])
+def health():
+    uptime = get_uptime()
+    return jsonify(
+        {
+            "status": "healthy",
+            "timestamp": datetime.now(timezone.utc).isoformat(),
+            "uptime_seconds": uptime["seconds"],
+        }
+    )
+
+
+@app.route("/", methods=["GET"])
+def default_route():
+    logger.info(f"Request: {request.method} {request.path}")
+    uptime = get_uptime()
+
+    response = {
+        "service": {
+            "name": "devops-info-service",
+            "version": "1.0.0",
+            "description": "DevOps course info service",
+            "framework": "Flask",
+        },
+        "system": get_system_info(),
+        "runtime": {
+            "uptime_seconds": uptime["seconds"],
+            "uptime_human": uptime["human"],
+            "current_time": datetime.now(timezone.utc).isoformat(),
+            "timezone": "UTC",
+        },
+        "request": {
+            "client_ip": request.remote_addr,
+            "user_agent": request.headers.get("User-Agent"),
+            "method": request.method,
+            "path": request.path,
+        },
+        "endpoints": [
+            {"path": "/", "method": "GET", "description": "Service information"},
+            {"path": "/health", "method": "GET", "description": "Health check"},
+        ],
+    }
+
+    return jsonify(response)
+
+
+@app.errorhandler(404)
+def not_found(error):
+    return jsonify({"error": "Not Found", "message": "Endpoint does not exist"}), 404
+
+
+@app.errorhandler(500)
+def internal_error(error):
+    return (
+        jsonify(
+            {
+                "error": "Internal Server Error",
+                "message": "An unexpected error occurred",
+            }
+        ),
+        500,
+    )
+
+
+if __name__ == "__main__":
+    logger.info("[+] Starting...")
+    try:
+        app.run(host=HOST, port=PORT, debug=DEBUG)
+    finally:
+        logger.info("[i] Shutting down")

app_python/docs/.gitignore

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+**/__pycache__/
+myvenv/