Dockerfile.wolfi

FROM docker.elastic.co/wolfi/jdk:openjdk-21.35-r1-dev@sha256:d7ca36452a68f28e4c4683062241e817b548844820a0ffd087451214e61eb188

USER root

# ------------------------------------------------------------------------------
# we need curl and make below, but then we remove them later
# TODO maybe we can do multi-stage to reduce layers in the final image
RUN apk update && apk add --no-cache curl=8.11.1-r0 make

# ------------------------------------------------------------------------------
# jruby install steps below have been adapted from:
# https://github.com/jruby/docker-jruby/blob/f325c86e2c2ca0bbe82f64c0aded0719372507fa/9.4/jdk21/Dockerfile

ENV JRUBY_VERSION=9.4.8.0
ENV JRUBY_SHA256=347b6692bd9c91c480a45af25ce88d77be8b6e4ac4a77bc94870f2c5b54bc929
RUN mkdir /opt/jruby \
  && curl -fSL https://repo1.maven.org/maven2/org/jruby/jruby-dist/${JRUBY_VERSION}/jruby-dist-${JRUBY_VERSION}-bin.tar.gz -o /tmp/jruby.tar.gz \
  && echo "$JRUBY_SHA256 /tmp/jruby.tar.gz" | sha256sum -c - \
  && tar -zx --strip-components=1 -f /tmp/jruby.tar.gz -C /opt/jruby \
  && rm /tmp/jruby.tar.gz
RUN mkdir -p /usr/local/bin && ln -s /opt/jruby/bin/jruby /usr/local/bin/ruby
ENV PATH=/opt/jruby/bin:$PATH

# skip installing gem documentation
RUN mkdir -p /opt/jruby/etc \
       && { \
               echo 'install: --no-document'; \
               echo 'update: --no-document'; \
       } >> /opt/jruby/etc/gemrc

RUN gem install bundler rake net-telnet xmlrpc

# don't create ".bundle" in all our apps
ENV GEM_HOME=/usr/local/bundle
ENV BUNDLE_SILENCE_ROOT_WARNING=1 \
    BUNDLE_APP_CONFIG="$GEM_HOME"
ENV PATH=$GEM_HOME/bin:$PATH

# adjust permissions of a few directories for running "gem install" as an arbitrary user
RUN mkdir -p "$GEM_HOME" && chmod 777 "$GEM_HOME"

# ------------------------------------------------------------------------------
# install the application

# TODO we should look at finding a better way to get the application artifact into
# the container image, since we are adding lots of stuff here that we do not need
# and may not want (do we need vendor/ after the make install below, for instance?),
# contributing to increased image size; for now at least we can remove `.git` (below)
COPY . /app

WORKDIR /app

# skip jenv/rbenv setup
ENV IS_DOCKER=1

RUN make clean install

# Clean up build dependencies
RUN rm -r /root/.m2

# ------------------------------------------------------------------------------
# remove now-unnecessary packages and directories

RUN apk del curl make git \
    && apk --purge del apk-tools \
    && rm -rf /app/.git

# switch back to the base image's default user when running the application
USER java

ENTRYPOINT [ "/bin/bash" ]