mumairofficial

Optimizing Rust container builds

I'm a Rust newbie, and one of the things that I've found frustrating is that the default docker build experience is extremely slow. As it downloads crates, then dependencies, then finally my app - I often get distracted, start doing something else, then come back several minutes later and forget what I was doing

Recently, I had the idea to make it a little better by combining multistage builds with some of the amazing features from BuildKit. Specifically, cache mounts, which let a build container cache directories for compilers & package managers. Here's a quick annotated before & after from a real app I encountered.

Before

This is a standard enough multistage Dockerfile. Nothing seemingly terrible or great here - just a normal build stage, and a smaller runtime stage.

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[
  [
    "2023-03-24T14:00:00Z",
    "mel1",
    0.00000780582
  ],
  [
    "2023-03-24T16:00:00Z",
    "mel1",
    0.548530874

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import java.time.*;
import java.time.format.DateTimeFormatter;
import java.time.format.FormatStyle;
import java.time.temporal.ChronoUnit;
import java.time.temporal.TemporalAdjusters;
import java.util.*;

import static java.time.temporal.TemporalAdjusters.*;

public class Java8DateTimeExamples {

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What I Use

WIP: Personal blog & portfolio; will migrate this list once done!

Hardware

• Dell 27" Monitor: P2719H
• Dell Precision 7520
  • 2.90 GHz
  • 1TB SSD
  • 32GB Memory
• Logitech MX Master 2 Mouse

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{
	"auto_complete": true,
	"auto_complete_commit_on_tab": true,
	"auto_complete_with_fields": true,
	"bold_folder_labels": true,
	"color_scheme": "Packages/Agila Theme/Agila Classic Oceanic Next.tmTheme",
	"default_encoding": "UTF-8",
	"draw_minimap_border": true,
	"draw_white_space": "all",
	"folder_exclude_patterns":

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ssh-keygen -t rsa -b 4096 -m PEM -f jwtRS256.key
# Don't add passphrase
openssl rsa -in jwtRS256.key -pubout -outform PEM -out jwtRS256.key.pub
cat jwtRS256.key
cat jwtRS256.key.pub

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1. Overview

This is an example of using module tls in NodeJS to create a client securely connecting to a TLS server.

It is a modified version from documentation about TLS, in which:

• The server is a simple echo one. Clients connect to it, get the same thing back if they send anything to the server.
• The server is a TLS-based server.
• Clients somehow get the server's public key and use it to work securely with the server

2. Preparation

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[user]
	name = mumair
	email = mumairofficial@gmail.com
[aliash]
	gcmsg = commit -m
	
[alias]
	# Git Commit, Add all and Push — in one step.
  cap = "!f() { git commit -m \"$@\"; }; f" # git push; <- can add this as well | git add .; 

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https://www.digitalocean.com/community/tutorials/how-to-install-node-js-on-ubuntu-18-04

(script versions: [v0.33.11, v0.34.0])

1. curl -sL https://raw.githubusercontent.com/creationix/nvm/v0.34.0/install.sh -o install_nvm.sh
2. Inspect (optional): nano install_nvm.sh
3. Run: bash install_nvm.sh
4. source ~/.profile
5. Finally nvm ls-remote fetch list of node from live
6. Install nvm install