Reducing Docker Image Sizes with Multi-Stage Builds

Thu, 20 Mar 2025 00:00:00 +0900

Introduction

Keeping Docker image footprints small is critical for accelerating deployment cycles, lowering storage costs, and tightening security by shrinking the container’s attack surface.

However, a naive Dockerfile construction often bundles compile-time dependencies (like gcc, headers, build caches) and testing tools directly into the final runtime image. This inflates the image size from a few megabytes to hundreds or gigabytes.

To solve this, Docker introduced Multi-Stage Builds. This article reviews the core practices of multi-stage architectures, demonstrating image footprint optimization using a TypeScript Node.js project.

Proxmox LXC Containers: Complete Management Guide

Wed, 22 May 2024 00:00:00 +0000

What is LXC?

LXC (Linux Containers) is an OS-level virtualization method that runs multiple isolated Linux systems on a single host using a shared kernel. Unlike full virtual machines, LXC containers share the host OS kernel while maintaining their own filesystem, processes, and network stack. This design makes them extremely lightweight and fast to start.

LXC vs Virtual Machines

The choice between LXC containers and VMs depends on your isolation and performance requirements:

Containers on Commentary of Takao

Reducing Docker Image Sizes with Multi-Stage Builds

Introduction

Proxmox LXC Containers: Complete Management Guide

What is LXC?

LXC vs Virtual Machines