# Alpine Mirror

# Introduction

Alpine Linux (opens new window) is a security-oriented, lightweight Linux distribution based on musl libc and busybox.

Many people build their Docker images based on alpine (opens new window) to reduce the image size.

# Configuration

Suppose you are using Alpine Linux 3.10. You can write the following line to /etc/apk/repositories:


# Use Mirror to Build Docker Image

You can also specify repositories in a Dockerfile:

FROM alpine:3.10

RUN echo "https://mirrors.sustech.edu.cn/alpine/v3.10/main" > /etc/apk/repositories ; \
    echo "https://mirrors.sustech.edu.cn/alpine/v3.10/community" >> /etc/apk/repositories ; \
    # followed by your wonderful commands

Note that the first redirection uses > to overwrite the existing file while the second one uses >> to append a line.