fix: use symlinks & strip git while installing (#1864)

For some reason, the size of the images increased a lot around the time we moved to building git with clang but, local tests show that it does not seem related.
Rework git build configuration to reduce image size.

Author: mayeut

docker/build_scripts/build-git.sh

@@ -44,14 +44,21 @@ fetch_source "${GIT_ROOT}.tar.gz" "${GIT_DOWNLOAD_URL}"
 check_sha256sum "${GIT_ROOT}.tar.gz" "${GIT_HASH}"
 tar -xzf "${GIT_ROOT}.tar.gz"
 pushd "${GIT_ROOT}"
-make install prefix=/usr/local NO_GETTEXT=1 NO_TCLTK=1 DESTDIR=/manylinux-rootfs CSPRNG_METHOD=${CSPRNG_METHOD} CPPFLAGS="${MANYLINUX_CPPFLAGS}" CFLAGS="${MANYLINUX_CFLAGS}" CXXFLAGS="${MANYLINUX_CXXFLAGS}" LDFLAGS="${MANYLINUX_LDFLAGS}"
+make install \
+	prefix=/usr/local \
+	NO_GETTEXT=1 \
+	NO_TCLTK=1 \
+	INSTALL_SYMLINKS=1 \
+	INSTALL_STRIP=-s \
+	DESTDIR=/manylinux-rootfs \
+	CSPRNG_METHOD=${CSPRNG_METHOD} \
+	CPPFLAGS="${MANYLINUX_CPPFLAGS}" \
+	CFLAGS="${MANYLINUX_CFLAGS}" \
+	CXXFLAGS="${MANYLINUX_CXXFLAGS}" \
+	LDFLAGS="${MANYLINUX_LDFLAGS}"
 popd
 rm -rf "${GIT_ROOT}" "${GIT_ROOT}.tar.gz"
 
-
-# Strip what we can
-strip_ /manylinux-rootfs
-
 # Install
 cp -rlf /manylinux-rootfs/* /