# Copyright 2023 Foster Hangdaan
#
# 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.


# Download, verify and unpack stage
FROM docker.io/library/ubuntu:22.04 as downloader

RUN apt-get update -y \
  && DEBIAN_FRONTEND=noninteractive apt-get install -y curl gnupg git \
  && apt-get clean

WORKDIR /bitcoin

ARG TARGETPLATFORM
ENV BITCOIN_VERSION=25.1

RUN set -ex \
  && if [ "${TARGETPLATFORM}" = "linux/amd64" ]; then export TARGETPLATFORM=x86_64-linux-gnu; fi \
  && if [ "${TARGETPLATFORM}" = "linux/arm64" ]; then export TARGETPLATFORM=aarch64-linux-gnu; fi \
  && if [ "${TARGETPLATFORM}" = "linux/arm/v7" ]; then export TARGETPLATFORM=arm-linux-gnueabihf; fi \
  && git clone https://github.com/bitcoin-core/guix.sigs.git \
  && gpg --import guix.sigs/builder-keys/* \
  && curl --show-error --remote-name --location https://bitcoincore.org/bin/bitcoin-core-${BITCOIN_VERSION}/bitcoin-${BITCOIN_VERSION}-${TARGETPLATFORM}.tar.gz \
  && curl --show-error --remote-name --location https://bitcoincore.org/bin/bitcoin-core-${BITCOIN_VERSION}/SHA256SUMS \
  && curl --show-error --remote-name --location https://bitcoincore.org/bin/bitcoin-core-${BITCOIN_VERSION}/SHA256SUMS.asc \
  && gpg --verify SHA256SUMS.asc SHA256SUMS \
  && grep " bitcoin-${BITCOIN_VERSION}-${TARGETPLATFORM}.tar.gz" SHA256SUMS | sha256sum --check - \
  && mkdir ./tmp \
  && tar -xzf bitcoin-${BITCOIN_VERSION}-${TARGETPLATFORM}.tar.gz -C ./tmp --strip-components 1


# Runtime stage
FROM docker.io/library/ubuntu:22.04

LABEL maintainer="Foster Hangdaan <foster@hangdaan.email>"

RUN set -ex && \
  apt-get update && \
  apt-get --no-install-recommends --yes install ca-certificates && \
  apt-get clean && \
  rm -rf /var/lib/apt

COPY --from=downloader /bitcoin/tmp/bin/bitcoind /usr/local/bin/

RUN adduser --system --group --disabled-password bitcoin && \
  mkdir -p /home/bitcoin/.bitcoin

# Expose volume containing all `bitcoind` data
VOLUME /home/bitcoin/.bitcoin/

# REST interface
EXPOSE 8080

# P2P network (mainnet, testnet & regnet respectively)
EXPOSE 8333 18333 18444

# RPC interface (mainnet, testnet & regnet respectively)
EXPOSE 8332 18332 18443

# ZMQ ports (for transactions & blocks respectively)
EXPOSE 28332 28333

# Switch to bitcoin user
USER bitcoin

ENTRYPOINT ["bitcoind"]
CMD ["-zmqpubrawblock=tcp://0.0.0.0:28332", "-zmqpubrawtx=tcp://0.0.0.0:28333"]