Cache built Docker images

from __future__ import annotations

import codecs

import hashlib

import ipaddress

import json

import logging

	return ipaddress.ip_address(purl.hostname)

def _hash_cmd(cmd: Arguments) -> str:

	hash = hashlib.sha256()

	for arg in cmd:

		arg = fspath(arg)

		hash.update(arg.encode("utf-8") if isinstance(arg, str) else arg)

	return f"@cmd:{hash.hexdigest()}"

class IPv4Address(ipaddress.IPv4Address):

	"""

	Subclass of IPv4Address that handle's docker idiosyncratic tendency to add a mask suffix

			b"build", context, f"--target={target}",

			*(f"--build-arg={arg}={val}" for arg, val in build_args.items() if val is not None),

		]

		key = _hash_cmd(cmd)

		try:

			iid = cls._cache[key]

		except KeyError:

			docker(*cmd, DOCKER_BUILDKIT='1')

			iid = ShaID(docker_output(*cmd, '-q', DOCKER_BUILDKIT='1'))

			cls._cache[key] = iid

		return cls(iid)

	@classmethod