Jose Marcos RF josemarcosrf

Docker - How to cleanup (unused) resources

Once in a while, you may need to cleanup resources (containers, volumes, images, networks) ...

Prune

From docker 1.25+ you can use this commands:

prune image: Remove all unused images, not just dangling ones. This will delete all the images without an associated container!

If you are like me you find yourself cloning a repo, making some proposed changes and then deciding to later contributing back using the GitHub Flow convention. Below is a set of instructions I've developed for myself on how to deal with this scenario and an explanation of why it matters based on jagregory's gist.

To follow GitHub flow you should really have created a fork initially as a public representation of the forked repository and the clone that instead. My understanding is that the typical setup would have your local repository pointing to your fork as origin and the original forked repository as upstream so that you can use these keywords in other git commands.

Clone some repo (you've probably already done this step)
```
git clone [email protected]
```

Introduction

I wrote this gist to record the steps I followed to get docker running in my Raspberry Pi 3. The ARM ported debian version (Jessie) comes with an old version of docker. It is so old that the docker hub it tries to interact with doesn't work anymore :)

Hopefully this gist will help someone else to get docker running in their Raspberry Pi 3.

Installation

From original instructions at http://blog.hypriot.com/post/run-docker-rpi3-with-wifi/

vpngate.py

This is a port of the original gist to python 3.

This script allows to use the free VPN service provided by VPNGate in an easy way. The user just needs to provide the desidered output country, and the script automatically chooses the best server.

After this step, OpenVPN is launched with the proper configuration. The VPN can be terminated by pressing Ctrl+C.

	1. list all remote tags
	git ls-remote --tags

	2. delete local tag
	git tag -d V_1_0_1

	3. push tag deletion to remote
	git push origin :refs/tags/V_1_0_1

	4. tag local branch again

	const fs = require('fs');
	const { auth } = require('google-auth-library');

	const API_KEY = 'ADD YOUR API KEY HERE';
	const fileName = './audio.raw';

	// Reads a local audio file and converts it to base64
	const file = fs.readFileSync(fileName);
	const audioBytes = file.toString('base64');

	"""Provides a utility to inject environment variables into argparse definitions.
	Currently requires explicit naming of env vars to check for"""

	import argparse
	import os

	# Courtesy of http://stackoverflow.com/a/10551190 with env-var retrieval fixed
	class EnvDefault(argparse.Action):
	"""An argparse action class that auto-sets missing default values from env
	vars. Defaults to requiring the argument."""

	# Download installers
	mkdir ~/Downloads/nvidia
	cd ~/Downloads/nvidia
	wget https://developer.nvidia.com/compute/cuda/8.0/Prod2/local_installers/cuda_8.0.61_375.26_linux-run
	wget http://us.download.nvidia.com/XFree86/Linux-x86_64/384.59/NVIDIA-Linux-x86_64-384.59.run
	sudo chmod +x NVIDIA-Linux-x86_64-384.59.run
	sudo chmod +x cuda_8.0.61_375.26_linux-run
	./cuda_8.0.61_375.26_linux-run -extract=~/Downloads/nvidia/
	# Uninstall old stuff
	sudo apt-get --purge remove nvidia-*