Not able to install the gem “rmagick” with docker

I have this Dockerfile

FROM ruby:2.1.5

RUN apt-get update -qq && apt-get install -y build-essential

# for postgres
RUN apt-get install -y libpq-dev

# for nokogiri
RUN apt-get install -y libxml2-dev libxslt1-dev

# for capybara-webkit
RUN apt-get install -y libqt4-webkit libqt4-dev xvfb

# for a JS runtime
RUN apt-get install -y nodejs

# for rmagick
RUN apt-get install -y imagemagick libmagickwand-dev

ENV APP_HOME /lescollectionneurs
RUN mkdir $APP_HOME
WORKDIR $APP_HOME

ADD Gemfile* $APP_HOME/
RUN bundle install

ADD . $APP_HOME

And this Gemfile :

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  • source 'https://rubygems.org'
    
    ruby "2.1.5"
    
    gem "rmagick", require: 'RMagick'
    

    When I user docker build . :

    sudo docker build .
    Sending build context to Docker daemon 567.6 MB
    Sending build context to Docker daemon
    Step 0 : FROM ruby:2.1.5
     ---> afba1b22768e
    Step 1 : RUN apt-get update -qq && apt-get install -y build-essential
     ---> Using cache
     ---> 542ba2520fd7
    Step 2 : RUN apt-get install -y libpq-dev
     ---> Using cache
     ---> 242d31de9101
    Step 3 : RUN apt-get install -y libxml2-dev libxslt1-dev
     ---> Using cache
     ---> 81fdba39c703
    Step 4 : RUN apt-get install -y libqt4-webkit libqt4-dev xvfb
     ---> Using cache
     ---> e16c728f5879
    Step 5 : RUN apt-get install -y nodejs
     ---> Using cache
     ---> 08a676ea038c
    Step 6 : RUN apt-get install -y imagemagick libmagickwand-dev
     ---> Using cache
     ---> f6911106ff8d
    Step 7 : ENV APP_HOME /lescollectionneurs
     ---> Using cache
     ---> d4740491742f
    Step 8 : RUN mkdir $APP_HOME
     ---> Using cache
     ---> f439a8295600
    Step 9 : WORKDIR $APP_HOME
     ---> Using cache
     ---> 0ffdb5e33df1
    Step 10 : ADD Gemfile* $APP_HOME/
     ---> Using cache
     ---> 8867a3e40baf
    Step 11 : RUN bundle install
     ---> Running in fd98e604631d
    Don't run Bundler as root. Bundler can ask for sudo if it is needed, and
    installing your bundle as root will break this application for all non-root
    users on this machine.
    Fetching gem metadata from https://rubygems.org/..
    Fetching version metadata from https://rubygems.org/.
    Resolving dependencies...
    
    Gem::Ext::BuildError: ERROR: Failed to build gem native extension.
    
        /usr/local/bin/ruby extconf.rb
    checking for Ruby version >= 1.8.5... yes
    checking for gcc... yes
    checking for Magick-config... no
    Can't install RMagick 2.13.2. Can't find Magick-config in /usr/local/bundle/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
    
    *** extconf.rb failed ***
    Could not create Makefile due to some reason, probably lack of necessary
    libraries and/or headers.  Check the mkmf.log file for more details.  You may
    need configuration options.
    
    Provided configuration options:
            --with-opt-dir
            --without-opt-dir
            --with-opt-include
            --without-opt-include=${opt-dir}/include
            --with-opt-lib
            --without-opt-lib=${opt-dir}/lib
            --with-make-prog
            --without-make-prog
            --srcdir=.
            --curdir
            --ruby=/usr/local/bin/ruby
    
    extconf failed, exit code 1
    
    Gem files will remain installed in /usr/local/bundle/gems/rmagick-2.13.2 for inspection.
    Results logged to /usr/local/bundle/extensions/x86_64-linux/2.1.0-static/rmagick-2.13.2/gem_make.out
    An error occurred while installing rmagick (2.13.2), and Bundler cannot
    continue.
    Make sure that `gem install rmagick -v '2.13.2'` succeeds before bundling.
    INFO[0014] The command [/bin/sh -c bundle install] returned a non-zero code: 5
    

    It does not work because it cannot find /usr/bin/

    When I run sudo docker run -t -i lescollectionneurs /bin/bash, I can do this :

    root@4b015bacf80d:/# apt-get install -y imagemagick libmagickwand-dev
    #..... Installing successfully
    root@4b015bacf80d:/# /usr/bin/Magick
    Magick-config      MagickCore-config  MagickWand-config
    
    root@4b015bacf80d:/# /usr/bin/Magick-config
    Usage: Magick-config [--cflags] [--cppflags] [--exec-prefix] [--ldflags] [--libs] [--prefix] [--version]
    Example: gcc `Magick-config --cflags --cppflags` -o core core.c `Magick-config --ldflags --libs`
    
    root@4b015bacf80d:/# gem install rmagick
    Fetching: rmagick-2.15.0.gem (100%)
    Building native extensions.  This could take a while...
    Successfully installed rmagick-2.15.0
    Parsing documentation for rmagick-2.15.0
    Installing ri documentation for rmagick-2.15.0
    Done installing documentation for rmagick after 7 seconds
    1 gem installed
    

    As you can see, I can install imagemagick by opening the bash. After the installation , the binary file is available and I can install rmagick.

    Why the result is not the same in the docke file ? How can I install rmagick using the Dockerfile ?

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  • 2 Solutions collect form web for “Not able to install the gem “rmagick” with docker”

    I think you are missing libmagickcore-dev which will allow you to successfully compile rmagick. Try the following:

    RUN apt-get install imagemagick libmagickcore-dev libmagickwand-dev
    

    Version 2.13.4 of the gem has fixed this problem for me.
    https://github.com/docker-library/rails/issues/16#issuecomment-64514330

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