Split base/ into base/ and tools/

Signed-off-by: Riyaz Faizullabhoy <riyaz.faizullabhoy@docker.com>

tools/mkimage-iso-bios/Dockerfile

@@ -0,0 +1,13 @@
+FROM alpine:3.5
+
+RUN \
+  apk update && apk upgrade && \
+  apk add --no-cache \
+  libarchive-tools \
+  cdrkit \
+  syslinux \
+  && true
+
+COPY . .
+
+CMD [ "/make-iso" ]

tools/mkimage-iso-bios/Makefile

@@ -0,0 +1,29 @@
+.PHONY: tag push
+
+BASE=alpine:3.5
+IMAGE=mkimage-iso-bios
+
+default: push
+
+hash: Dockerfile make-iso
+	DOCKER_CONTENT_TRUST=1 docker pull $(BASE)
+	tar cf - $^ | docker build --no-cache -t $(IMAGE):build -
+	docker run --rm --entrypoint /bin/sh $(IMAGE):build -c 'cat $^ /lib/apk/db/installed | sha1sum' | sed 's/ .*//' > $@
+
+push: hash
+	docker pull mobylinux/$(IMAGE):$(shell cat hash) || \
+		(docker tag $(IMAGE):build mobylinux/$(IMAGE):$(shell cat hash) && \
+		 docker push mobylinux/$(IMAGE):$(shell cat hash))
+	docker rmi $(IMAGE):build
+	rm -f hash
+
+tag: hash
+	docker pull mobylinux/$(IMAGE):$(shell cat hash) || \
+		docker tag $(IMAGE):build mobylinux/$(IMAGE):$(shell cat hash)
+	docker rmi $(IMAGE):build
+	rm -f hash
+
+clean:
+	rm -f hash
+
+.DELETE_ON_ERROR:

tools/mkimage-iso-bios/make-iso

@@ -0,0 +1,45 @@
+#!/bin/sh
+
+set -e
+
+mkdir -p /tmp/iso
+cd /tmp/iso
+
+# input is a tarball of vmlinuz64 and initrd.img on stdin
+# output is an iso on stdout
+
+# extract. BSD tar auto recognises compression, unlike GNU tar
+# only if stdin is a tty, if so need files volume mounted...
+[ -t 0 ] || bsdtar xzf -
+
+INITRD="$(find . -name '*.img')"
+KERNEL="$(find . -name vmlinuz64 -or -name bzImage)"
+
+[ "$KERNEL" = "vmlinuz64" ] || mv "$KERNEL" vmlinuz64
+[ "$INITRD" = "initrd.img" ] || mv "$INITRD" initrd.img
+
+# clean up subdirectories
+find . -mindepth 1 -maxdepth 1 -type d | xargs rm -rf
+
+mkdir -p isolinux
+cp /usr/share/syslinux/isolinux.bin ./isolinux/
+cp /usr/share/syslinux/ldlinux.c32 ./isolinux/
+
+CFG="DEFAULT linux
+LABEL linux
+    KERNEL /vmlinuz64
+    INITRD /initrd.img
+    APPEND earlyprintk=serial console=ttyS0 console=tty1 $*
+"
+
+printf "$CFG" > isolinux/isolinux.cfg
+
+genisoimage -o ../mobylinux-bios.iso -l -J -R \
+                -c isolinux/boot.cat  \
+                -b isolinux/isolinux.bin \
+                   -no-emul-boot -boot-load-size 4 -boot-info-table \
+                -V MobyLinux .
+
+isohybrid ../mobylinux-bios.iso
+
+cat ../mobylinux-bios.iso