Ubuntu LTS Xenial (16.04) based image with rbenv and it's ruby-build plugin.
Build exaples
To build an MRI:
docker build --no-cache --build-arg RUBY_VERSION=2.4.0 --force-rm --tag=some-name/mri:0.0.1 .
To build a jRuby:
docker build --no-cache --build-arg RUBY_VERSION=jruby-9.1.7.0 --force-rm --tag=some-name/jruby:0.0.1 .
Usage example as an app
FROM vadviktor/mri:2.4.0
MAINTAINER whoami@gmail.com
RUN mkdir -p /app
COPY . /app
WORKDIR /app
RUN . /init.sh && \
bundle install && \
gem install whatever gems you like && \
rbenv rehash && \
rake whatever
EXPOSE 3000
ENTRYPOINT ["/app/startup.sh"]
startup.sh example:
Setting the PATH and initializing rbenv is mandatory. Running code with exec is a must have.
#!/bin/bash
export PATH="/root/.rbenv/bin:$PATH" && \
eval "$(rbenv init -)" && \
exec bundle exec thin -e production -p 3000 start
Usage example for running single scripts
In this example we are running a minitest suite.
All the tests:
docker run -it --rm -v "$PWD":/usr/src/myapp -w /usr/src/myapp vadviktor/mri:2.4.0 bash /init.sh && for file in test/test_*.rb; do ruby -Ilib:test $file; done
One-by-one:
docker run -it --rm -v "$PWD":/usr/src/myapp -w /usr/src/myapp vadviktor/mri:2.4.0 bash /init.sh && ruby -Ilib:test test/test_my_class.rb