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node.jsdockerbinarydockerfilealpine-linux

Running NodeJs binary with scratch Docker image

We can convert NodeJs applications into binaries with the pkg package. I want to build the binary and run the same with the Docker scratch image.

index.js

const http = require('http')
http.createServer().listen(3000)

Dockerfile

FROM node:10 as build

COPY index.js .
RUN npm i pkg -g && pkg -t node10-alpine-x64 index.js

FROM scratch
COPY --from=build index /index

ENTRYPOINT ["/index"]

When I run docker build -t index . && docker run --rm -it index, I get this error message - standard_init_linux.go:211: exec user process caused "no such file or directory".

What am I missing?

Solution

  • scratch is an empty image with no files at all, your binary may have dependencies and expect certain linux environment. Try to use minimal linux base images instead of scratch - alpine, debian, ubuntu.