Baseline

The baseline with a Dockerfile similar to:

FROM node

COPY . ./

RUN npm i

CMD ["node", "src/js/server.mjs"]

It uses the default variant of the official Node.js Docker image for building the image and serving the example REST API with no optimizations.

Branch

000-baseline

Result

Image (MB) Layer Count node Binary (MB) node_modules (MB) Server (B)

	Image (MB)	Layer Count	node Binary (MB)	node_modules (MB)	Server (B)
Baseline	`1740`	`22`	`116.0`	`51.0`	`2515`

Baseline

1740

22

116.0

51.0

2515

$ SOURCE_DATE_EPOCH=1 GITHUB_SHA="N/A" scripts/docker_build.sh -p linux/amd64 -t 000-baseline -n
...

$ docker images de.sdavids/sdavids-node-docker-image-slimming:000-baseline --format "{{.Repository}}\t{{.Tag}}\t{{.Size}}"
de.sdavids/sdavids-node-docker-image-slimming   000-baseline    1.74GB

$ docker run --rm de.sdavids/sdavids-node-docker-image-slimming:000-baseline du -hs /usr/local/bin/node
116M  /usr/local/bin/node

$ docker run --rm de.sdavids/sdavids-node-docker-image-slimming:000-baseline du -hs /node
67M /node

$ docker run --rm de.sdavids/sdavids-node-docker-image-slimming:000-baseline du -hs /node/node_modules
51M /node/node_modules

$ docker run --rm de.sdavids/sdavids-node-docker-image-slimming:000-baseline stat -c "%s" /node/src/js/server.mjs
2515

$ docker run --rm de.sdavids/sdavids-node-docker-image-slimming:000-baseline ls -A /node
.devcontainer
.editorconfig
.git
.gitattributes
.github
.gitignore
.idea
.npmrc
.nvmrc
Dockerfile
LICENSES
README.adoc
REUSE.toml
docker
docs
node_modules
package-lock.json
package.json
scripts
src

$ docker image history --format "table {{.Size}}\t{{.CreatedBy}}" de.sdavids/sdavids-node-docker-image-slimming:000-baseline
SIZE      CREATED BY
0B        LABEL org.opencontainers.image.licenses=Apac…
0B        HEALTHCHECK &{["CMD-SHELL" "node /node/src/j…
0B        CMD ["node" "src/js/server.mjs"]
0B        EXPOSE map[3000/tcp:{}]
0B        USER node:node
0B        ENV PORT=3000
0B        ENV NODE_ENV=production
60.6MB    RUN /bin/sh -c npm i &&     chown -R node:no…
32.5MB    COPY . ./ # buildkit
8.19kB    WORKDIR /node
0B        CMD ["node"]
0B        ENTRYPOINT ["docker-entrypoint.sh"]
20.5kB    COPY docker-entrypoint.sh /usr/local/bin/ # …
5.41MB    RUN /bin/sh -c set -ex   && export GNUPGHOME…
0B        ENV YARN_VERSION=1.22.22
202MB     RUN /bin/sh -c ARCH= && dpkgArch="$(dpkg --p…
0B        ENV NODE_VERSION=22.15.0
69.6kB    RUN /bin/sh -c groupadd --gid 1000 node   &&…
619MB     RUN /bin/sh -c set -ex;  apt-get update;  ap…
194MB     RUN /bin/sh -c set -eux;  apt-get update;  a…
52.2MB    RUN /bin/sh -c set -eux;  apt-get update;  a…
133MB     # debian.sh --arch 'amd64' out/ 'bookworm' '…

$ printf 'Layer Count: %s\n' "$(docker history de.sdavids/sdavids-node-docker-image-slimming:000-baseline | tail -n +2 | wc -l | tr -d ' ')"
Layer Count: 22

More Information

Official Node.js Docker image