Error loading shared library ... Exec format error

Hi!

I’m trying to run sharp inside a node:alpine container but I’m having lots of trouble, after reading issue #988 I’ve managed to get it to compile but it crashes at runtime.

This is the dockerfile I’m using.

FROM node:alpine
RUN apk update && apk add --update nodejs-npm
RUN apk add vips-dev fftw-dev --update-cache --repository https://dl-3.alpinelinux.org/alpine/edge/testing/

RUN apk --no-cache add -t .build-deps \
        gcc \
        libc-dev\
        make \
        libpng-dev \
        g++ \
        git && \
    mkdir -p /opt/google && \
    cd /opt/google && \
    git clone https://github.com/google/guetzli.git && \
    cd guetzli && \
    make && \
    cd /opt  && \
    mv /opt/google/guetzli/bin/Release/guetzli . && \
    rm -fr /opt/google && \
    apk --no-cache add libpng libstdc++

ENV TZ=Europe/Dublin
RUN ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && echo $TZ > /etc/timezone

WORKDIR /usr/server

COPY ./shared /usr/app/shared
COPY ./server /usr/app/server

WORKDIR /usr/app/shared
RUN npm install

WORKDIR /usr/app/server

RUN npm install -g ts-node typescript && npm install && npm run build

EXPOSE 3005

ENTRYPOINT npm run dev

I can see sharp it’s getting built during npm install

> sharp@0.20.8 install /usr/app/server/node_modules/sharp
> (node install/libvips && node install/dll-copy && prebuild-install) || (node-gyp rebuild && node install/dll-copy)

info sharp Detected globally-installed libvips v8.6.3
info sharp Building from source via node-gyp
make: Entering directory '/usr/app/server/node_modules/sharp/build'
  TOUCH Release/obj.target/libvips-cpp.stamp
  CXX(target) Release/obj.target/sharp/src/common.o
  CXX(target) Release/obj.target/sharp/src/metadata.o
  CXX(target) Release/obj.target/sharp/src/stats.o
  CXX(target) Release/obj.target/sharp/src/operations.o
  CXX(target) Release/obj.target/sharp/src/pipeline.o
  CXX(target) Release/obj.target/sharp/src/sharp.o
  CXX(target) Release/obj.target/sharp/src/utilities.o
  SOLINK_MODULE(target) Release/obj.target/sharp.node
  COPY Release/sharp.node
make: Leaving directory '/usr/app/server/node_modules/sharp/build'

But the moment I do (Using typescript) import * as sharp from 'sharp'

I get the following error: Error: Error loading shared library /usr/app/server/node_modules/sharp/build/Release/sharp.node: Exec format error

It’s there something I’m missing? Thank you!

[lovell]

Hello, my best guess would be that the COPY directives are populating node_modules directories inside the container with (OS X?) contents from outside the container.

[konradovsky]

For me the problem was that I didn’t specify the .dockerignore on the root folder precise enough. I needed to add **/node_modules and not node_module