jlfwong

SSH forwarding for Docker Desktop for Mac which respects $SSH_AUTH_SOCK

This is a quick tutorial on how to get SSH key forwarding working on Docker Desktop for Mac in situations where you want control of which ssh-agent server is being used, rather than the default.

You might want to do this to e.g. forward a specific SSH key into a docker container.

Docker has support for general SSH key forwarding, but this doesn't respect $SSH_AUTH_SOCK.

Background on ssh-agent

jlfwong

// http://bgrins.github.io/devtools-snippets/#console-save
var saveToFile = function(data, filename) {
  if (!data) {
    console.error('Console.save: No data');
    return;
  }

  if (!filename) {
    filename = 'console.json';
  }

jlfwong

// Handy for debugging sometimes
function tap(fn) {
  return function() {
    const result = fn.apply(this, arguments);
    console.log(Array.prototype.slice.call(arguments), '->', result);
    return result;
  }
}

jlfwong

.PHONY: run

run: test
	./$<

test: test.o runtime.o
	gcc -arch i386 $^ -o $@

%.o: %.asm
	nasm -f macho $< -o $@

jlfwong

// http://bgrins.github.io/devtools-snippets/#console-save
var saveToFile = function(data, filename) {
  if (!data) {
    console.error('Console.save: No data');
    return;
  }

  if (!filename) {
    filename = 'console.json';
  }

jlfwong

var foo = function() { console.log("foo"); };
var bar = function() { console.log("bar"); };

(foo())
(bar())

/*
Ouput:

(bar())

jlfwong

Building the package! RequireJS plugin, I'm getting weird side effect problems.

Requiring a package first:

> require(["package!issues.js"]); null
null
Require Package: issues.js package_loader_plugin.js?bust=1379092758956:96
XHR finished loading: "http://localhost:1234/javascript-packages.json".

jquery.js?bust=1379092758956:8526

jlfwong

Changing 4 space indentation into 2 space indentation

:set ts=4 noexpandtab | retab! | set ts=2 expandtab | retab!

Changing 4 space indentation in every CoffeeScript file in your current directory

:args ./**/*.coffee | argdo execute "set ts=4 noexpandtab | retab! | set ts=2 expandtab | retab!" | update

Thanks to bamford on #vim for the :retab! trick

jlfwong

#!/bin/bash

sandbox="$(mktemp -d)"
hasstdin=false

if [ ! -t 0 ]; then
    cat <&0 > "$sandbox/stdin.txt"
    hasstdin=true
fi

jlfwong

Why this is useful:

1. All data in ENV is coming from the server, so it's easy to differentiate data coming from the server and static data when reading through JS.
2. If you put the {{ env_js }} in the root template, it'll be usable by in all templates that inherit from it. That means you don't need to adjust the template to share data to the client-side.
3. Only one new global variable instead of one per thing coming from the server.