Build Multi-Platform Docker Image

What problem does it solve?

This Skill automates the process of building Docker images that are compatible with multiple CPU architectures (like amd64 and arm64), ensuring your applications can run on a wider range of hardware. It also streamlines the optional step of pushing these images to a Docker registry.

Core Features & Use Cases

• Multi-Platform Builds: Creates Docker images for linux/amd64 and linux/arm64 simultaneously using docker buildx.
• Image Tagging: Supports latest, master-head, and custom tags for versioning.
• Registry Push: Optionally pushes the built image to Docker Hub.
• Prerequisite Checks: Validates Docker, buildx, and Docker Hub authentication before building.
• Use Case: A developer needs to build a Docker image for a new microservice that will be deployed on both standard servers (amd64) and ARM-based devices (like Raspberry Pi). This Skill ensures the image is built correctly for both architectures.

Quick Start

Build the 'bookworm' image with the 'latest' tag and push it to Docker Hub.