tests/docker: move our arm64 cross compile to Buster

Now Buster is released we can unify our cross build images for both
QEMU and tests.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>

tests/docker/Makefile.include

@@ -86,13 +86,10 @@ docker-binfmt-image-debian-%: $(DOCKER_FILES_DIR)/debian-bootstrap.docker
 endif
 
 # Enforce dependencies for composite images
-docker-image-debian: docker-image-debian9
 docker-image-debian9-mxe: docker-image-debian9
 docker-image-debian-amd64: docker-image-debian9
 docker-image-debian-armel-cross: docker-image-debian9
 docker-image-debian-armhf-cross: docker-image-debian9
-docker-image-debian-arm64-cross: docker-image-debian9
-docker-image-debian-buster-arm64-cross: docker-image-debian10
 docker-image-debian-mips-cross: docker-image-debian9
 docker-image-debian-mipsel-cross: docker-image-debian9
 docker-image-debian-mips64el-cross: docker-image-debian9
@@ -101,6 +98,8 @@ docker-image-debian-s390x-cross: docker-image-debian9
 docker-image-debian-win32-cross: docker-image-debian9-mxe
 docker-image-debian-win64-cross: docker-image-debian9-mxe
 
+docker-image-debian-arm64-cross: docker-image-debian10
+
 docker-image-debian-alpha-cross: docker-image-debian-sid
 docker-image-debian-hppa-cross: docker-image-debian-sid
 docker-image-debian-m68k-cross: docker-image-debian-sid

tests/docker/dockerfiles/debian-arm64-cross.docker

@@ -1,9 +1,9 @@
 #
 # Docker arm64 cross-compiler target
 #
-# This docker target builds on the debian Stretch base image.
+# This docker target builds on the debian Buster base image.
 #
-FROM qemu:debian9
+FROM qemu:debian10
 
 # Add the foreign architecture we want and install dependencies
 RUN dpkg --add-architecture arm64

tests/tcg/configure.sh

@@ -95,7 +95,7 @@ for target in $target_list; do
   case $target in
     aarch64-*)
       # We don't have any bigendian build tools so we only use this for AArch64
-      container_image=debian-buster-arm64-cross
+      container_image=debian-arm64-cross
       container_cross_cc=aarch64-linux-gnu-gcc
       ;;
     alpha-*)