Dan dhh93

I don't expect moby/moby#24170 to be solved by Docker team on near future so this gist is about looking for least ugly workarounds which are available today and on near future.

What is possible on Docker 19.03

Network

It is possible to create overlay network with use user specified subnet. On this example I create network which is size is two C -class networks ( IP range 10.0.0.0 - 10.0.1.255 ) and force Docker to use IPs from second part of it ( 10.0.1.0 - 10.0.1.255 ).

That way I can make sure that IPs 10.0.0.2 - 10.0.0.254 can be specified to containers and they do not collide with IPs which Docker engine assign for service(s)/container(s).

`apk`

apk-tools 2.8.2, compiled for x86_64.

usage: apk COMMAND [-h|--help] [-p|--root DIR] [-X|--repository REPO] [-q|--quiet] [-v|--verbose] [-i|--interactive] [-V|--version] [-f|--force]
           [--force-binary-stdout] [--force-broken-world] [--force-non-repository] [--force-old-apk] [--force-overwrite] [--force-refresh] [-U|--update-cache]
           [--progress] [--progress-fd FD] [--no-progress] [--purge] [--allow-untrusted] [--wait TIME] [--keys-dir KEYSDIR] [--repositories-file REPOFILE]
           [--no-network] [--no-cache] [--cache-dir CACHEDIR] [--arch ARCH] [--print-arch] [ARGS]...

	-- The goal of this script is to trim messages that have been processed by
	-- all extant groups from the a given Redis stream. It returns the number
	-- of messages that were deleted from the stream, if any. I make no
	-- guarantees about its performance, particularly if the stream is large
	-- and not fully processed (so a simple XTRIM isn't possible).

	-- First off, bail out early if the stream doesn't exist.
	if redis.call("EXISTS", KEYS[1]) == 0 then
	return false
	end

	package main

	import (
	"archive/tar"
	"bytes"
	"compress/gzip"
	"fmt"
	"io"
	"os"
	"path/filepath"

	# non root user example for alpine
	#
	# usage:
	# $ docker build --build-arg "USER=someuser" --tag test .
	# $ docker run --rm test

	FROM alpine

	ARG USER=default
	ENV HOME /home/$USER

	#!/bin/bash

	# This installs alacritty terminal on ubuntu (https://github.com/jwilm/alacritty)
	# You have to have rust/cargo installed for this to work

	# Install required tools
	sudo apt-get install -y cmake libfreetype6-dev libfontconfig1-dev xclip

	# Download, compile and install Alacritty
	git clone https://github.com/jwilm/alacritty

	FROM golang:alpine as builder
	WORKDIR /app
	#the following 2 steps are optional if your image does not already have the certificate
	# package installed, golang:alpine now seems to have it. But a more base image could be missing it.
	#RUN apk update && apk upgrade && apk add --no-cache ca-certificates
	#RUN update-ca-certificates
	ADD main.go /app/main.go
	RUN CGO_ENABLED=0 GOOS=linux go build -a -ldflags="-s -w" -installsuffix cgo -o app .

	FROM scratch

	//
	// Companion code to https://medium.com/statuscode/pipeline-patterns-in-go-a37bb3a7e61d
	//
	// To run:
	// go get github.com/pkg/errors
	// go run -race pipeline_demo.go
	//

	package main

	/*
	* shared_mutex: Mutex in mmap memory shared between processes.
	*
	* Ben Cohen, July 2017.
	*
	* Compile using:
	* gcc -o shared_mutex shared_mutex.c -ggdb -Wall -std=c99 -pthread
	*
	* Two processes are created with an mmap shared memory region
	* containing an array of chars and a mutex. The mutex is created with

	package main

	import (
	"io"
	"net/http"
	"sync/atomic"
	)

	func index() http.Handler {
	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {