Dockerfile.base

# 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.

# Shared build image for Dockerfile.explorer and Dockerfile.bundles. It installs
# system deps, compiles the C++ dep set (folly, fbthrift, ...) AND the project
# itself (with examples), then RPATH-fixes everything into /artifacts/linux. Both
# downstream images consume those artifacts -- explorer packages them for runtime,
# bundles runs the example binaries to bake problem bundles -- so the entire
# compile happens exactly ONCE here. Compose builds this first via
# additional_contexts; by hand: docker build -f Dockerfile.base -t rebalancer-build .

FROM ubuntu:24.04 AS builder

ENV DEBIAN_FRONTEND=noninteractive
ENV PIP_BREAK_SYSTEM_PACKAGES=1

COPY build/fbcode_builder /src/build/fbcode_builder
WORKDIR /src

# System deps for rebalancer-explorer (the superset target; the examples need
# nothing beyond it).
RUN apt-get update \
 && apt-get install -y python3 python3-pip git wget gnupg software-properties-common libc-ares-dev \
 && wget -qO- https://apt.llvm.org/llvm-snapshot.gpg.key \
      | gpg --dearmor -o /usr/share/keyrings/llvm-archive-keyring.gpg \
 && echo "deb [signed-by=/usr/share/keyrings/llvm-archive-keyring.gpg] http://apt.llvm.org/noble/ llvm-toolchain-noble-19 main" \
      > /etc/apt/sources.list.d/llvm.list \
 && apt-get update \
 && python3 build/fbcode_builder/getdeps.py \
      --allow-system-packages install-system-deps --recursive rebalancer-explorer \
 && apt-get clean && rm -rf /var/lib/apt/lists/*

# Build the dep set BEFORE copying source, so this (expensive) layer stays cached
# across source changes. --extra-cmake-defines must stay byte-identical to the
# project build below: it feeds every dep's install-dir hash (getdeps load.py), so
# any drift rebuilds the deps. It must NOT carry EXAMPLES=ON -- examples come from
# the manifest's test=on path so the dep hashes are unaffected.
RUN python3 build/fbcode_builder/getdeps.py \
      --allow-system-packages build \
      --build-type RelWithDebInfo \
      --shared-lib \
      --no-tests \
      --src-dir=. \
      rebalancer-explorer \
      --only-deps \
      --extra-cmake-defines '{"CMAKE_C_COMPILER":"gcc","CMAKE_CXX_COMPILER":"g++","BUILD_TESTS":"OFF"}'

COPY . /src

# Build the project + examples (--no-deps); rebuilds on source changes. Examples
# come from the manifest's [cmake.defines.test=on] EXAMPLES=ON, enabled by omitting
# --no-tests (test=on applies to the top project only). BUILD_TESTS:OFF still skips
# test binaries.
RUN python3 build/fbcode_builder/getdeps.py \
      --allow-system-packages build \
      --build-type RelWithDebInfo \
      --shared-lib \
      --src-dir=. \
      rebalancer-explorer \
      --no-deps \
      --project-install-prefix rebalancer-explorer:/usr/local \
      --extra-cmake-defines '{"CMAKE_C_COMPILER":"gcc","CMAKE_CXX_COMPILER":"g++","BUILD_TESTS":"OFF"}'

# RPATH-fix the project binaries + their from-source shared libs into
# /artifacts/linux so they run standalone; downstream images copy this directory.
# --shared-lib/--extra-cmake-defines must match the builds above.
RUN python3 build/fbcode_builder/getdeps.py \
      --allow-system-packages fixup-dyn-deps \
      --strip \
      --shared-lib \
      --src-dir=. \
      rebalancer-explorer \
      /artifacts/linux \
      --project-install-prefix rebalancer-explorer:/usr/local \
      --final-install-prefix /usr/local \
      --extra-cmake-defines '{"CMAKE_C_COMPILER":"gcc","CMAKE_CXX_COMPILER":"g++","BUILD_TESTS":"OFF"}'