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軽量なSTNSのDockerイメージを作る

Last updated at Posted at 2020-12-30

STNSサーバのDockerイメージが大きいので軽量なDockerイメージを作った.

cdsl-research/stns-container

構成

マルチステージビルドを使うことでビルド環境と実行環境を分離した.

  • マルチステージビルド
    • ビルド時イメージ: golang:1.15.6-alpine3.12
    • 実行時イメージ: alpine:3.12

比較

公式の提供するDockerイメージに比べて68%のサイズ削減を実現した.

$ docker images | grep stns
stns-server                                                      latest                                           98a315731b33   41 minutes ago   69.2MB
stns/stns                                                        latest                                           597e448def6a   9 days ago       219MB

Dockerfile

FROM golang:1.15.6-alpine3.12 AS builder
WORKDIR /tmp
ENV BUILD=/artifacts
RUN apk --no-cache update && \
    apk --no-cache upgrade && \
    apk --no-cache add make alpine-sdk gcc openssl libcurl git && \
    git clone https://github.com/STNS/STNS.git && \
    cd STNS/ && \
    mkdir -p $BUILD && \
    make install MODDIR=$BUILD BINDIR=$BUILD

FROM alpine:3.12
EXPOSE 1104/tcp
WORKDIR /stns
COPY --from=builder /artifacts /stns
COPY config.toml /stns
ENTRYPOINT ["/stns/stns", "--config", "/stns/config.toml", "server"]
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