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Minimal Node/io.js Docker Images built on Alpine Linux

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Minimal Node.js Docker Images (18MB, or 6.7MB compressed)

Versions v5.10.1, v4.4.3, v0.12.13, v0.10.44, and io.js – built on Alpine Linux.

All versions use the one mhart/alpine-node repository, but each version aligns with the following tags (ie, mhart/alpine-node:<tag>):

  • Full install built with npm:
    • latest, 5, 5.10, 5.10.1 – 36.84 MB (npm 3.8.5)
    • 4, 4.4, 4.4.3 – 36.8 MB (npm 2.15.3)
    • 0.12, 0.12.13 – 32.89 MB (npm 2.15.3)
    • 0.10, 0.10.44 – 28.33 MB (npm 2.15.3)
  • Base install with node built as a static binary with no npm:
    • base, base-5, base-5.10, base-5.10.1 – 27.52 MB
    • base-4, base-4.4, base-4.4.3 – 27.75 MB
    • base-0.12, base-0.12.13 – 24.14 MB
    • base-0.10, base-0.10.44 – 18.31 MB

Major io.js versions are tagged too.

Example

$ docker run mhart/alpine-node node --version
v5.10.1

$ docker run mhart/alpine-node:4 node --version
v4.4.3

$ docker run mhart/alpine-node npm --version
3.8.5

$ docker run mhart/alpine-node:base node --version
v5.10.1

$ docker run mhart/alpine-node:3 iojs --version
v3.3.1

$ docker run mhart/alpine-node:base-0.10 node --version
v0.10.44

Example Dockerfile for your own Node.js project

If you don't have any native dependencies, ie only depend on pure-JS npm modules, then my suggestion is to run npm install locally before running docker build (and make sure node_modules isn't in your .dockerignore) – then you don't need an npm install step in your Dockerfile and you don't need npm installed in your Docker image – so you can use one of the smaller base* images.

FROM mhart/alpine-node:base
# FROM mhart/alpine-node:base-0.10
# FROM mhart/alpine-node

WORKDIR /src
ADD . .

# If you have native dependencies, you'll need extra tools
# RUN apk add --no-cache make gcc g++ python

# If you need npm, don't use a base tag
# RUN npm install

EXPOSE 3000
CMD ["node", "index.js"]

Caveats

As Alpine Linux uses musl, you may run into some issues with environments expecting glibc-like behaviour (for example, Kubernetes). Some of these issues are documented here:

Inspired by:

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Minimal Node/io.js Docker Images built on Alpine Linux

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