Initial version of docker config for testing rspec on ubuntu.

Dockerfile

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+FROM buildpack-deps:stretch
+MAINTAINER github@digressed.net
+
+ENV LC_ALL C.UTF-8
+
+# Update Ubuntu Software repository
+RUN apt-get update
+
+# install dependencies & utils
+RUN apt-get install -y \
+    libicu-dev \
+    curl \
+    libreadline-dev 
+
+# aliases, environment
+RUN echo 'alias h="history"' >> /root/.bashrc
+RUN echo 'alias be="bundle exec"' >> /root/.bashrc
+ENV PATH "/root/.rbenv/bin:/root/.rbenv/shims:$PATH"
+
+# install rbenv & ruby
+RUN \curl -sL https://github.com/rbenv/rbenv-installer/raw/master/bin/rbenv-installer | bash -
+RUN eval "$(rbenv init -)"
+
+ENV RUBY_VERSION=2.6.3
+RUN rbenv install ${RUBY_VERSION}
+RUN rbenv global ${RUBY_VERSION}
+
+# mute bundle warning about root user
+RUN bundle config --global silence_root_warning 1
+
+WORKDIR /gem
+
+# cleanup
+RUN rm -rf /var/lib/apt/lists/*

bin/build_docker_image.sh

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+#!/bin/bash
+
+set -e
+
+if [[ $# -ne 1 ]]; then
+    RUBY_VERSION=2.6.3
+else
+    RUBY_VERSION=$1
+fi
+
+docker build -t edn_turbo_image:$RUBY_VERSION .

bin/console.sh

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+#!/bin/bash
+
+set -e
+
+docker-compose run edn_turbo /bin/bash

docker-compose.yml

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+version: "3"
+services:
+
+  edn_turbo:
+    image: edn_turbo_image:2.6.3
+    stdin_open: true
+    tty: true
+    volumes:
+      - ~/.bash_history:/root/.bash_history
+      - /Volumes/homes/ep/work/edn_turbo:/gem