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How to reduce size of docker data volume in Docker Desktop for Windows v2

Docker Desktop for Windows v2, which uses WSL2, stores all image and container files in a separate virtual volume (vhdx). This virtual hard disk file can automatically grow when it needs more space (to a certain limit). Unfortunately, if you reclaim some space, i.e. by removing unused images, vhdx doesn't shrink automatically.

Optimize

wsl --shutdown
Optimize-VHD -Path "$($env:LOCALAPPDATA)\Docker\wsl\data\ext4.vhdx" -Mode Full

Activate wsl2

dism.exe /online /enable-feature /featurename:Microsoft-Windows-Subsystem-Linux /all /norestart
dism.exe /online /enable-feature /featurename:VirtualMachinePlatform /all /norestart
wsl --set-default-version 2

Install and Configure Ubuntu

KeyDB with Docker

Migration from Redis

Connect to your keydb server new-keydb-server-1

keydb-cli -h new-keydb-server-1

Docker Hub 镜像加速器

国内从 Docker Hub 拉取镜像有时会遇到困难，此时可以配置镜像加速器。

Dockerized 实践 https://github.com/y0ngb1n/dockerized

1️⃣ Docker daemon 配置代理（推荐）

参考 Docker daemon 配置代理

	# 概述：一共三大部分配置。
	# 其中#注释掉的可以在需要的时候开启并修改，没有注释掉的（除了下面location示例）不要删掉，基本都是必须的配置项。

	###############################第一部分全局配置############################
	#user nobody; 指定启动进程的用户，默认不用指定即可。
	#error_log logs/error.log; 配置日志输出，虽然叫error_log但是可以定义输出的级别，默认不写是ERROR级别
	#error_log logs/error.log notice;
	#error_log logs/error.log info;
	#pid logs/nginx.pid; 记录pid的文件，默认就是放到这个位置，可以修改。

	#!/bin/bash
	# Parallel rsync script originally designed for rsyncing
	# large ata transfers from RAID to RAID for the Aagaard Lab.
	# Author: Michael Jochum
	# Location: Baylor College of Medicine, Houston, TX, USA
	# Contact : michael.jochum@bcm.edu
	# Date : 2 November 2020

	##################################
	#Step 0: fill this shit out

	# Configuration file for runtime kernel parameters.
	# See sysctl.conf(5) for more information.

	# See also http://www.nateware.com/linux-network-tuning-for-2013.html for
	# an explanation about some of these parameters, and instructions for
	# a few other tweaks outside this file.

	# See evil packets in your logs.
	net.ipv4.conf.all.log_martians = 1

	#!/bin/sh
	echo 'use "curl -sSL git.io/corefile \| bash" to update Corefile'
	echo "remember to change 192.168.1.1 to your ISP's DNS server address or use public DNS server such as 114/DNSPod etc. directly"
	china=`curl -sSL https://raw.githubusercontent.com/felixonmars/dnsmasq-china-list/master/accelerated-domains.china.conf \| while read line; do awk -F '/' '{print $2}' \| grep -v '#' ; done \| paste -sd " " -`
	apple=`curl -sSL https://raw.githubusercontent.com/felixonmars/dnsmasq-china-list/master/apple.china.conf \| while read line; do awk -F '/' '{print $2}' \| grep -v '#' ; done \| paste -sd " " -`
	google=`curl -sSL https://raw.githubusercontent.com/felixonmars/dnsmasq-china-list/master/google.china.conf \| while read line; do awk -F '/' '{print $2}' \| grep -v '#' ; done \| paste -sd " " -`
	bogus=`curl -sSL https://raw.githubusercontent.com/felixonmars/dnsmasq-china-list/master/bogus-nxdomain.china.conf \| grep "=" \| while read line; do awk -F '=' '{print $2}' \| grep -v '#' ; done \| paste -sd " " -`
	cat>Corefile

	"""This module contains the ``SeleniumMiddleware`` scrapy middleware"""

	import asyncio

	from pyppeteer import launch
	from scrapy import signals
	from scrapy.http import HtmlResponse
	from twisted.internet import defer

	from .http import PuppeteerRequest

	ip rule add fwmark 0x233 lookup 100
	ip route add local 0.0.0.0/0 dev lo table 100