Fix git inclusion [skip ci]

Author: Claudio Raimondi

.dockerignore

@@ -1,4 +1,3 @@
 Dockerfile
 contrib/docker/Dockerfile.*
-target
-.git/
+target

Dockerfile

@@ -1,3 +1,5 @@
+# syntax=docker/dockerfile:1.7-labs
+
 FROM --platform=${BUILDPLATFORM} debian:bookworm-slim AS base-host
 
 SHELL ["/bin/bash", "-euo", "pipefail", "-c"]
@@ -67,6 +69,7 @@ RUN apt-get update && \
         build-essential \
         ca-certificates \
         wget \
+        git \
         python3-dev \
         autoconf \
         automake \
@@ -88,7 +91,7 @@ ADD --chmod=750 https://sh.rustup.rs                 install-rust.sh
 
 WORKDIR /opt/lightningd
 
-COPY . .
+COPY --exclude=.git/ . .
 
 FROM base-builder AS base-builder-linux-amd64
 
@@ -155,12 +158,13 @@ linker = "${target_arch}-gcc"
 rustflags = ["-C", "target-cpu=generic"]
 EOF
 
-#TODO: ensure Makefile compiles using CPU dependent intrinsics (avx/sse/march=native). see issue (https://github.com/ElementsProject/lightning/issues/8456). COPTFLAGS
-RUN ./configure --enable-static --disable-compat --disable-valgrind
-#TODO: Fix: .git needed by makefile for git --describe
-RUN uv run make -j$(nproc) lightningd/lightningd
+#TODO: maybe only compile lightningd? instead of all the plugins as well
+RUN ./configure --prefix=/opt/lightningd --enable-static --disable-compat --disable-valgrind
+COPY .git/ .git/
+RUN git submodule update --init --recursive
+RUN uv run make -j$(nproc) install
 
-RUN ${STRIP} --strip-unneeded lightningd/lightningd
+RUN ${STRIP} --strip-unneeded bin/lightningd
 
 FROM base-target AS final
 
@@ -173,9 +177,9 @@ RUN apt-get update && \
     apt-get clean && \
     rm -rf /var/lib/apt/lists/*
 
-COPY --from=downloader    /opt/bitcoin/bin/bitcoin-cli             /usr/bin/
-COPY --from=downloader    /opt/litecoin/bin/litecoin-cli           /usr/bin/
-COPY --from=builder       /opt/lightningd/lightningd/lightningd    /usr/local/bin/
+COPY --from=downloader    /opt/bitcoin/bin/bitcoin-cli      /usr/bin/
+COPY --from=downloader    /opt/litecoin/bin/litecoin-cli    /usr/bin/
+COPY --from=builder       /opt/lightningd/bin/lightningd    /usr/local/bin/
 
 COPY tools/docker-entrypoint.sh    /entrypoint.sh