# If you change this please also update GO_VERSION in Makefile (then run
# `make lint` to see where else it needs to be updated as well).
FROM golang:1.26.3-alpine AS builder

LABEL maintainer="Olaoluwa Osuntokun <laolu@lightning.engineering>"

# Install build dependencies such as git and glide.
RUN apk add --no-cache git gcc musl-dev

WORKDIR $GOPATH/src/github.com/btcsuite/btcd

# Pin down btcd to a version that we know works with lnd.
ARG BTCD_VERSION=v0.25.0

# Grab and install the latest version of of btcd and all related dependencies.
RUN git clone https://github.com/btcsuite/btcd.git . \
    && git checkout $BTCD_VERSION \
    && go install -v . ./cmd/...

# Start a new image
FROM alpine:3.22 AS final

# Expose mainnet ports (server, rpc)
EXPOSE 8333 8334

# Expose testnet ports (server, rpc)
EXPOSE 18333 18334

# Expose simnet ports (server, rpc)
EXPOSE 18555 18556

# Expose signet ports (server, rpc)
EXPOSE 28901 28902

# Copy the compiled binaries from the builder image.
COPY --from=builder /go/bin/addblock /bin/
COPY --from=builder /go/bin/btcctl /bin/
COPY --from=builder /go/bin/btcd /bin/
COPY --from=builder /go/bin/findcheckpoint /bin/
COPY --from=builder /go/bin/gencerts /bin/

COPY "start-btcctl.sh" .
COPY "start-btcd.sh" .

RUN apk add --no-cache \
    bash \
    ca-certificates \
    && mkdir "/rpc" "/root/.btcd" "/root/.btcctl" \
    && touch "/root/.btcd/btcd.conf" \
    && chmod +x start-btcctl.sh \
    && chmod +x start-btcd.sh \
    # Manually generate certificate and add all domains, it is needed to connect
    # "btcctl" and "lnd" to "btcd" over docker links.
    && "/bin/gencerts" --host="*" --host="blockchain" --directory="/rpc" --force

# Create a volume to house pregenerated RPC credentials. This will be
# shared with any lnd, btcctl containers so they can securely query btcd's RPC
# server.
# You should NOT do this before certificate generation!
# Otherwise manually generated certificate will be overridden with shared
# mounted volume! For more info read dockerfile "VOLUME" documentation.
VOLUME ["/rpc"]

# Health check to ensure btcd is running
HEALTHCHECK --interval=30s --timeout=10s --start-period=60s --retries=3 \
    CMD pgrep btcd || exit 1
