Docker buildx with multi-CPU architecture support

Docker images can support multiple architectures, which means that a single image may contain variants for different architectures, and sometimes for different operating systems, such as Windows.

When running an image with multi-architecture support, docker automatically selects the image variant that matches your OS and architecture.

Most of the Docker Official Images on Docker Hub provide a variety of architectures. For example, the busybox image supports amd64, arm32v5, arm32v6, arm32v7, arm64v8, i386, ppc64le, and s390x. When running this image on an x86_64 / amd64 machine, the amd64 variant is pulled and run.

Fly.io

Fly.io is a global application distribution platform. We run your code in Firecracker microVMs around the world.

In this work-through we’re going to deploy an application to Fly. In this example, the application will come from a docker image, but first, we want to install all the tools you need to work with Fly. Which is one tool, flyctl.

Deploy Your Application via Dockerfile

You already have a project wrapped up in a docker container - https://docs.docker.com/engine/reference/builder/ ? Great! Just deploy that!

Deploy a static website on Fly via Dockerfile

Fly.io is a global application distribution platform. We run your code in Firecracker microVMs around the world.

FAQs Go Module

must match format 1.23

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$ go mod tidygo: errors parsing go.mod:
go.mod:3: invalid go version '1.18beta1': must match format 1.23

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// go.mod

- go 1.18beta1
+ go 1.18

asdf install GraalVM Java

GraalVM Java is the High-performance runtime with new compiler optimizations to accelerate Java application performance and lower infrastructure costs on premises and in the cloud. GraalVM Java provides new innovation for the Java platform:

• Makes Java applications go faster

• True microservice solution for Java

• Perfect for containerized workloads

asdf is a single CLI tool for managing multiple runtime versions. It extend with a simple plugin system to install your favourite language: Dart, Elixir, Flutter, Golang (Go), Java, Node.js, Python, Ruby …

This article is about how to use asdf and Java plugin to install GraalVM Java on macOS with the Homebrew package manager.

Rust Rocket Docker with multiple build stages

Rocket is a web framework for Rust. Rocket aims to be fast, easy, and flexible while offering guaranteed safety and security where it can. Importantly, Rocket also aims to be fun, and it accomplishes this by ensuring that you write as little code as needed to accomplish your task.

Multistage builds are useful to anyone who has struggled to optimize Dockerfiles while keeping them easy to read and maintain. See Use multi-stage builds | Docker Documentation - https://docs.docker.com/develop/develop-images/multistage-build/ to learn more.

Gradle, Spring Native and GraalVM Java

Spring Native provides support for compiling Spring applications to native executables using the GraalVM native-image compiler.

Compared to the Java Virtual Machine, native images can enable cheaper and more sustainable hosting for many types of workloads. These include microservices, function workloads, well suited to containers, and Kubernetes

Gradle is an open-source build automation tool focused on flexibility and performance. Gradle build scripts are written using a Groovy - https://groovy-lang.org/ or Kotlin - https://kotlinlang.org/ DSL. Read about Gradle features - https://gradle.org/features/ to learn what is possible with Gradle.

Crnk Spring Boot JPA example

The Crnk JPA module allows to automatically expose JPA entities as JSON:API repositories. No implementation or Crnk-specific annotations are necessary.

Crnk Spring Boot example

Crnk is a native resource-oriented rest library where resources and relationships are first class citizens and not just path mappings on methods. Model your application as resources and relationships and implement the repositories to access them. This simplifies development and opens up many, powerful new possibilities: