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node canvas on alpine within docker

I'm trying to install node canvas (https://github.com/Automattic/node-canvas) on Alpine within docker.

These are (parts of) my Dockerfile:

# Use node/alpine image for final build
FROM keymetrics/pm2:latest-alpine as app

# install dependencies for canvas
RUN apk --no-cache --virtual .build-deps add \
        python \
        make \
        g++ \
        gcc \
    && apk --no-cache --virtual .canvas-build-deps add \
        build-base \
        cairo-dev \
        jpeg-dev \
        pango-dev \
        giflib-dev \
        pixman-dev \
        pangomm-dev \
        libjpeg-turbo-dev \
        freetype-dev \
    && apk --no-cache add \
        pixman \
        cairo \
        pango \
        giflib
RUN apk add --update  --repository http://dl-3.alpinelinux.org/alpine/edge/testing libmount ttf-dejavu ttf-droid ttf-freefont ttf-liberation ttf-ubuntu-font-family fontconfig

# Install dependencies
RUN npm install --prod
RUN npm rebuild canvas --build-from-source

When I try to boot my docker container the following error appears:

Error: Error relocating /var/www/app/node_modules/canvas/build/Release/canvas.node: FcConfigGetCurrent: symbol not found
    at Object.Module._extensions..node (internal/modules/cjs/loader.js:775:18)
    at Module.load (internal/modules/cjs/loader.js:626:32)
    at tryModuleLoad (internal/modules/cjs/loader.js:566:12)
    at Function.Module._load (internal/modules/cjs/loader.js:558:3)
    at Module.require (internal/modules/cjs/loader.js:663:17)
    at require (internal/modules/cjs/helpers.js:20:18)
    at Object.<anonymous> (/var/www/app/node_modules/canvas/lib/bindings.js:3:18)
    at Module._compile (internal/modules/cjs/loader.js:734:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:745:10)
    at Module.load (internal/modules/cjs/loader.js:626:32)
    at tryModuleLoad (internal/modules/cjs/loader.js:566:12)
    at Function.Module._load (internal/modules/cjs/loader.js:558:3)
    at Module.require (internal/modules/cjs/loader.js:663:17)
    at require (internal/modules/cjs/helpers.js:20:18)
    at Object.<anonymous> (/var/www/app/node_modules/canvas/lib/canvas.js:9:18)
    at Module._compile (internal/modules/cjs/loader.js:734:30)

I'm guessing that it has something to do with the fact that Alpine uses musl instead of glibc but I thought that rebuilding canvas from source npm rebuild canvas --build-from-source would be enough.

I've already tried most suggestions from https://github.com/Automattic/node-canvas/issues but none is working for me.

Any suggestions ?

like image 347
Roy Milder Avatar asked Jul 18 '19 06:07

Roy Milder


People also ask

Does alpine image have node?

node:<version>-alpine This image is based on the popular Alpine Linux project, available in the alpine official image.

Should I use node alpine?

If you have "only" alpine images on your docker environment, then you should go with "alpine" or if the security of the "node" containers are really important to you. In most cases the "node" images based on "buildpack-deps" are suitable, since you have other docker containers based on "buildpack-deps".

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3 Answers

OK, here's an answer--a way to install node-canvas v2.5 under the official node:10.16.0-alpine Docker image. As you probably know, the error you posted, "Error relocating...canvas.node" indicates your build failed. This is because canvas uses glibc but alpine uses musl. Canvas needs to link to glibc, so you need to add it to your image. Sasha Gerrand offers alpine-pkg-glibc as one way to do it. Using his installation instructions, here's how it looks in a docker file:

    #  geo_core layer
    #  build on a node image, in turn built on alpine linux, Docker's official linux pulled from hub.docker.com
    FROM node:10.16.0-alpine

    #  add libraries; sudo so non-root user added downstream can get sudo
    RUN apk add --no-cache \
        sudo \
        curl \
        build-base \
        g++ \
        libpng \
        libpng-dev \
        jpeg-dev \
        pango-dev \
        cairo-dev \
        giflib-dev \
        python \
        ;

    #  add glibc and install canvas
    RUN apk --no-cache add ca-certificates wget  && \
        wget -q -O /etc/apk/keys/sgerrand.rsa.pub https://alpine-pkgs.sgerrand.com/sgerrand.rsa.pub && \
        wget https://github.com/sgerrand/alpine-pkg-glibc/releases/download/2.29-r0/glibc-2.29-r0.apk && \
        apk add glibc-2.29-r0.apk && \
        npm install [email protected]
        ;
like image 164
HieroB Avatar answered Oct 16 '22 22:10

HieroB


FROM node:12-alpine

WORKDIR /app

RUN apk add --update --no-cache \
    make \
    g++ \
    jpeg-dev \
    cairo-dev \
    giflib-dev \
    pango-dev \
    libtool \
    autoconf \
    automake

COPY package.json ./

RUN npm install

COPY . .

This worked for me. The additional packages are dependencies for sodium native.

like image 7
Young Developer Avatar answered Oct 16 '22 21:10

Young Developer


I ran into the same error installing [email protected] on docker base with alpine and nodev8.9.4. I was able to fix it by upgrading to nodev10.15.0 and alpinev3.10. It works without having to install the alpine-pkg-glibc package. Ofcourse, you'll still have to install these packages:

apk add --no-cache \
    python \
    g++ \
    build-base \
    cairo-dev \
    jpeg-dev \
    pango-dev \
    musl-dev \
    giflib-dev \
    pixman-dev \
    pangomm-dev \
    libjpeg-turbo-dev \
    freetype-dev \
    && npm install [email protected]
like image 4
sionelt Avatar answered Oct 16 '22 21:10

sionelt