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cblunt/general-rails-app.dockerfile

Last active May 15, 2019 10:40
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General Dockerfile for a Rails App
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general-rails-app.dockerfile
# /path/to/app/Dockerfile
FROM ruby:2.5-alpine
# Set local timezone
RUN apk add --update tzdata && \
cp /usr/share/zoneinfo/Europe/London /etc/localtime && \
echo "Europe/London" > /etc/timezone
# Install your app's runtime dependencies in the container
RUN apk add --update --virtual runtime-deps postgresql-client nodejs libffi-dev readline sqlite
# Bundle into the temp directory
WORKDIR /tmp
ADD Gemfile* ./
RUN apk add --virtual build-deps build-base postgresql-dev libc-dev linux-headers libxml2-dev libxslt-dev readline-dev && \
bundle install --jobs=2 && \
apk del build-deps
# Copy the app's code into the container
ENV APP_HOME /app
COPY . $APP_HOME
WORKDIR $APP_HOME
# Configure production environment variables
ENV RAILS_ENV=production \
RACK_ENV=production
# Expose port 3000 from the container
EXPOSE 3000
# Run puma server by default
CMD ["bundle", "exec", "puma", "-C", "config/puma.rb"]
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