Dockerfile.bundles

# Copyright (c) Meta Platforms, Inc. and affiliates.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.


# Bakes the example problem bundles and ships them in a tiny image. Running the
# image copies the baked *.bundle files into /out, which docker-compose mounts as
# a shared volume the Explorer reads from. The examples are deterministic, so the
# solving happens once here at build time (not on every container start).
#
# The project (incl. the example binaries) is compiled once in the shared build
# image (Dockerfile.base, wired in by compose via additional_contexts); this image
# just runs those binaries.
#
# Build (depends on the shared build image; build it first, or let compose do it):
#   docker build -f Dockerfile.base    -t rebalancer-build .
#   docker build -f Dockerfile.bundles -t rebalancer-bundles .

FROM rebalancer-build AS builder

# Install the RPATH-fixed artifacts, then run each example with --bundle_out.
RUN cp -a /artifacts/linux/. /usr/local/ \
 && ldconfig \
 && /src/tools/generate_example_bundles.sh /usr/local/bin /bundles /src

# Tiny final image: just the baked bundles + a copy-on-run entrypoint.
FROM busybox:1.36

COPY --from=builder /bundles /opt/bundles

# docker-compose mounts the shared volume here; running the image seeds it.
VOLUME /out
ENTRYPOINT ["/bin/sh", "-c", "cp -v /opt/bundles/*.bundle /out/ && echo 'Seeded example bundles to /out'"]