static-linux: verify that binaries are static

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

Author: thaJeztah

static/Makefile

@@ -5,6 +5,7 @@ ENGINE_DIR:=$(realpath $(CURDIR)/../../engine)
 STATIC_VERSION:=$(shell ./gen-static-ver $(ENGINE_DIR) $(VERSION))
 CHOWN=docker run --rm -v $(CURDIR):/v -w /v alpine chown
 HASH_CMD=docker run -v $(CURDIR):/sum -w /sum debian:jessie bash hash_files
+LDD_RUN=ldd >/dev/null 2>/dev/null
 DIR_TO_HASH:=build/linux
 GO_VERSION=$(shell grep "ARG GO_VERSION" $(CLI_DIR)/dockerfiles/Dockerfile.dev | awk -F'=' '{print $$2}')
 DOCKER_CLI_GOLANG_IMG=golang:$(GO_VERSION)
@@ -26,6 +27,7 @@ static-linux: static-cli static-engine ## create tgz with linux x86_64 client an
 	mkdir -p build/linux/docker
 	cp $(CLI_DIR)/build/docker build/linux/docker/
 	for f in dockerd containerd ctr containerd-shim docker-init docker-proxy runc; do \
+		if $(LDD_RUN) $(ENGINE_DIR)/bundles/binary-daemon/$$f; then echo "$$f is not static, exiting..."; exit 1; fi; \
 		cp -L $(ENGINE_DIR)/bundles/binary-daemon/$$f build/linux/docker/$$f; \
 	done
 	tar -C build/linux -c -z -f build/linux/docker-$(STATIC_VERSION).tgz docker
@@ -34,6 +36,7 @@ static-linux: static-cli static-engine ## create tgz with linux x86_64 client an
 	mkdir -p build/linux/docker-rootless-extras
 	for f in rootlesskit rootlesskit-docker-proxy dockerd-rootless.sh vpnkit; do \
 		if [ -f $(ENGINE_DIR)/bundles/binary-daemon/$$f ]; then \
+	  		if $(LDD_RUN) $(ENGINE_DIR)/bundles/binary-daemon/$$f; then echo "$$f is not static, exiting..."; exit 1; fi; \
 			cp -L $(ENGINE_DIR)/bundles/binary-daemon/$$f build/linux/docker-rootless-extras/$$f; \
 		fi \
 	done