feat(docker): do not pre-compile utilities

- partial revert of 9c3128f
- we are going to store toolchains in separate repository, it is more
  convenient to compile coreboot utilities inside the container rather
  than store them also in the separate repository

Signed-off-by: AtomicFS <vojtech.vesely@9elements.com>

docker/coreboot/Dockerfile

@@ -69,13 +69,31 @@ RUN apt-get update && \
     rm -rf /var/lib/apt/lists/* && \
     mkdir -p "${TOOLSDIR}"
 
+
+#=============
+# "toolchain" stage to build the coreboot toolchain
+FROM base AS toolchain
+
+# Compile coreboot utilities
+WORKDIR $TOOLSDIR
+RUN git clone --depth 1 "https://review.coreboot.org/coreboot.git" -b "${COREBOOT_VERSION}"
+WORKDIR $TOOLSDIR/coreboot
+RUN make -C util/ifdtool install && \
+    make -C util/cbfstool install
+
+
+#=============
+# "final" stage is the actual product with everything included
+FROM base AS final
+
 # Let coreboot know the toolchain path
 ENV XGCCPATH=${TOOLSDIR}/coreboot/util/crossgcc/xgcc/bin/
 
+# Copy over things from previous stage(s)
+COPY --from=toolchain /usr/local/bin/* /usr/local/bin/
 # Add pre-compiled coreboot toolchain and utils
 COPY coreboot-${COREBOOT_VERSION}/xgcc-${TARGETARCH} ${TOOLSDIR}/coreboot/util/crossgcc/xgcc
-COPY coreboot-${COREBOOT_VERSION}/utils-${TARGETARCH}/* /usr/local/bin/
-RUN git clone --depth 1 https://github.com/platomav/MEAnalyzer.git ${TOOLSDIR}/MEAnalyzer/
+RUN git clone --depth 1 "https://github.com/platomav/MEAnalyzer.git" "${TOOLSDIR}/MEAnalyzer/"
 
 # Prepare SSH for interactive debugging
 RUN mkdir -p /run/sshd && \