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#!/bin/bash

# Save docker images
ds() {
  docker images | \
    cut -d ' ' -f 1 | \
    tail -n +2 | \
    xargs -t -n 1 -I {} -P 4 \
      sh -c 'docker save {} | bzip2 > $(echo "{}" | sed "s/^.*\///").tar.bz2'
}

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Docker Reference

This week (May 2017) I have been learning about Docker... Here is what I've learned so far.

The shortcut commands in brackets refer to functions/aliases I've set up in my dotfiles.

Installing Docker on Ubuntu

sudo apt-get install docker docker-compose

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/* 11/27/2017 - Tweaked for a page redesign.
 * 1/6/2018 - Handle videos in book bundle.
 */
var pattern = /(MOBI|EPUB|PDF( ?\(H.\))?|CBZ)$/i;
var pattern2 = /(Download)$/;
var nodes = document.getElementsByTagName('a');
var downloadCmd = '';
for (i in nodes) {
    var a = nodes[i];
    if (a && a.text && pattern.test(a.text.trim())) {

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Setup Gitea on Raspberry Pi (3)

These instructions are based on this article: https://www.alexruf.net/2016/05/23/setup-gogs-git-service.html.

Setup Raspberry Pi with minimal Raspbian image. You need to connect to the HDMI port and set the following:

sudo raspi-config

There you need to enable the SSH server and you should change the hostname.

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Update and install dependencies

apt-get update; apt-get upgrade

dphys-swapfile swapoff
dphys-swapfile uninstall

apt-get remove -y --purge wolfram-engine triggerhappy xserver-common lightdm sonic-pi minecraft-pi pigpio
apt-get autoremove -y