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Dockerfile
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#################################
# Build Stage #
#################################
FROM ruby:3.2 AS build
# Set build shell
SHELL ["/bin/bash", "-c"]
# Use root user
USER root
ARG BUNDLER_VERSION=2.5.1
ARG PRE_INSTALL_SCRIPT
ARG BUILD_PACKAGES="sqlite3 libsqlite3-dev build-essential"
ARG INSTALL_SCRIPT
ARG BUNDLE_WITHOUT='development:metrics:test'
ARG BUILD_SCRIPT
RUN bash -vxc "${PRE_INSTALL_SCRIPT:-"echo 'no PRE_INSTALL_SCRIPT provided'"}"
# Install dependencies
RUN apt-get update \
&& apt-get upgrade -y \
&& apt-get install -y ${BUILD_PACKAGES}
RUN bash -vxc "${INSTALL_SCRIPT:-"echo 'no INSTALL_SCRIPT provided'"}"
# Install specific versions of dependencies
RUN gem install bundler:${BUNDLER_VERSION} --no-document
# TODO: Load artifacts
# set up app-src directory
COPY . /app-src
WORKDIR /app-src
ENV RAILS_ENV=production \
RACK_ENV=production \
RAILS_HOST_NAME='unused.example.net' \
SECRET_KEY_BASE="averylongbutunusedstringthatisneededforrailstobootandbuildassetsbutotherwisenotimportantduringthebuild" \
TZ=Europe/Zurich \
NODE_ENV=production
# install gems and build the app
RUN bundle config set --local deployment 'true' \
&& bundle config set --local without ${BUNDLE_WITHOUT} \
&& bundle package \
&& bundle install \
&& bundle clean
RUN bash -vxc "${BUILD_SCRIPT:-"echo 'no BUILD_SCRIPT provided'"}"
# TODO: Save artifacts
RUN rm -rf vendor/cache/ .git spec/ node_modules/ tmp/ \
db/*.sqlite3 \
openshift/ \
log/*.log
#################################
# Run Stage #
#################################
# This image will be replaced by Openshift
FROM ruby:3.2-slim AS app
# Set runtime shell
SHELL ["/bin/bash", "-c"]
# Add user
RUN adduser --disabled-password --uid 1001 --gid 0 --gecos "" app
ARG BUNDLE_WITHOUT='development:metrics:test'
ARG RUN_PACKAGES='sqlite3'
ENV RAILS_ENV=production \
RAILS_DB_ADAPTER=sqlite3
# Install dependencies, remove apt!
RUN apt-get update \
&& apt-get upgrade -y \
&& apt-get install -y ${RUN_PACKAGES} \
vim curl less
# Copy deployment ready source code from build
COPY --from=build /app-src /app-src
WORKDIR /app-src
# Set group permissions to app folder
RUN chgrp -R 0 /app-src \
&& chmod -R u+w,g=u /app-src
ENV HOME=/app-src
ENV PATH=/app-src/bin:$PATH
# Use cached gems
RUN bundle config set --local deployment 'true' \
&& bundle config set --local without ${BUNDLE_WITHOUT} \
&& bundle
USER 1001
CMD ["bundle", "exec", "puma", "-t", "8", "-p", "8080"]