Module doesn't work on Docker

[richthegeek]

When running the module in a Docker container using this config:

FROM mhart/alpine-node:8.1.4

RUN apk update
RUN apk add --no-cache git openssh python make g++ libc6-compat

# copy project files
COPY . /src

# install node_modules
RUN cd /src; npm install

# run
CMD ["node", "/src/app/app.js"]
EXPOSE 3002

I get this error:

/src/node_modules/bindings/bindings.js:83
        throw e
        ^

Error: Error relocating /src/node_modules/detect-character-encoding/build/Release/icuWrapper.node: ucnv_close_58: symbol not found
    at Object.Module._extensions..node (module.js:598:18)
    at Module.load (module.js:503:32)
    at tryModuleLoad (module.js:466:12)
    at Function.Module._load (module.js:458:3)
    at Module.require (module.js:513:17)
    at require (internal/module.js:11:18)
    at bindings (/src/node_modules/bindings/bindings.js:76:44)
    at Object.<anonymous> (/src/node_modules/detect-character-encoding/index.js:3:37)
    at Module._compile (module.js:569:30)
    at Object.Module._extensions..js (module.js:580:10)

It works locally (OSX) and on Travis (linux i think), and I have tried it with versions of node from 0.10.48 all the way up to 8.1.4. Are there unlisted dependencies that you can think of?

[richthegeek]

Seems like this is a problem with Alpine which uses musl-libc instead of glibc etc.

[sonicdoe]

Exactly. If you use the official Docker image for Node.js detect-character-encoding should work fine. I’ll try to include support for Alpine Linux in a future release.

[sonicdoe]

v0.5.0 now supports Alpine Linux.

[richthegeek]

Thanks!

[nuest]

Just wanted to note here that using alpine:3.6 and installing nodejs myself (6.x) as base image did not work for me, but using node:8-alpine did.

Thanks for a great package!

[sonicdoe]

@nuest Thanks for the kind words 🙂 I was able to reproduce the issue with the node:6-alpine image. However, I’m not sure if I’ll be able to fix this in the near future so I have created a separate issue.