wip: add s390x

Author: mhx

.docker/Makefile

@@ -34,7 +34,7 @@ run_debian:
 	@docker run $(COMMON_RUN_OPTS) $(IMAGE_DEBIAN)
 
 build_alpine:
-	docker buildx build -f Dockerfile.alpine --build-arg TARGET_ARCHS=x86_64,aarch64,riscv64,ppc64le,arm,i386 -t $(IMAGE_ALPINE) .
+	docker buildx build -f Dockerfile.alpine --build-arg TARGET_ARCHS=x86_64,aarch64,riscv64,ppc64le,s390x,arm,i386 -t $(IMAGE_ALPINE) .
 
 run_alpine:
 	@docker run $(COMMON_RUN_OPTS) $(IMAGE_ALPINE)

.github/workflows/docker-run-build.yml

@@ -59,7 +59,7 @@ jobs:
             -f .docker/Dockerfile.${{ inputs.build_dist }} \
             -t dwarfs-linux-build-${{ inputs.build_dist }} \
             --build-arg ARCH=${{ inputs.build_arch }} \
-            ${{ inputs.build_arch == 'amd64' && '--build-arg TARGET_ARCHS=x86_64,aarch64,riscv64,ppc64le,arm,i386' || '' }} \
+            ${{ inputs.build_arch == 'amd64' && '--build-arg TARGET_ARCHS=x86_64,aarch64,riscv64,ppc64le,s390x,arm,i386' || '' }} \
             .docker
 
       - name: Run Build