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Automation & scripting

CLI tools, scheduled jobs, filesystem tasks, and glue scripts that save time.

3 matches

How to Build a Docker Image Tag Script in Python

Generate consistent Docker image tags from service names and versions with automatic normalization.

#!/usr/bin/env python3
"""Mock script for building docker image tags."""


def build_tag(service_name: str, version: str, registry: str = "docker.io") -> str:
    """Construct a docker image tag."""
    safe_name = service_name.lower().replace("_", "-")
    return f"{registry}/{safe_name}:{version}"


if __name__ == "…

12 0 Open

Automation & scripting medium

How to Create a Mock Docker Registry Auth Token Server in Python

Build a mock Docker Registry token authentication server that issues signed JWT-like tokens for push and pull access using Python's standard library.

docker registry jwt

Python

import base64
import hashlib
import hmac
import json
import time
from http.server import BaseHTTPRequestHandler, HTTPServer


class TokenAuthHandler(BaseHTTPRequestHandler):
    """Mock Docker Registry token authentication server."""

    SECRET_KEY = b"mock-secret-key"

    def generate_token(self, username: str, pas…

16 0 Open

Automation & scripting easy

How to Filter Docker Containers for Pruning in Python

Simulate Docker's container prune by filtering a JSON list for exited containers older than a cutoff, returning pruned IDs and space freed.

docker json datetime

Python

import json
from datetime import datetime, timedelta


def parse_docker_ps(json_output: str, older_than_hours: int = 24) -> list:
    containers = json.loads(json_output)
    cutoff = datetime.now() - timedelta(hours=older_than_hours)
    return [
        c for c in containers
        if datetime.fromisoformat(c["crea…

13 0 Open

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