Use patched aufs-utils so can compile kernel with alpine

This is going to be submitted upstream.

Signed-off-by: Justin Cormack <justin.cormack@docker.com>

alpine/base/alpine-build-c/Dockerfile

@@ -1,2 +1,22 @@
 FROM alpine:3.4
-RUN apk update && apk upgrade && apk add build-base util-linux-dev linux-headers
+RUN \
+  apk update && apk upgrade && \
+  apk add \
+  alpine-sdk \
+  automake \
+  bash \
+  bc \
+  curl \
+  gmp-dev \
+  installkernel \
+  kmod \
+  linux-headers \
+  perl \
+  sed \
+  squashfs-tools \
+  syslinux \
+  unzip \
+  util-linux-dev \
+  vim \
+  xz \
+  && true

alpine/base/debian-build-kernel/Dockerfile

@@ -1,24 +0,0 @@
-FROM debian:jessie
-
-RUN apt-get update && apt-get -y upgrade && apt-get -y install \
-  unzip \
-  xz-utils \
-  curl \
-  bc \
-  build-essential \
-  cpio \
-  gcc libc6 libc6-dev \
-  kmod \
-  squashfs-tools \
-  genisoimage \
-  xorriso \
-  syslinux \
-  isolinux \
-  automake \
-  pkg-config \
-  git \
-  ncurses-dev \
-  p7zip-full \
-  lzop \
-  wget \
-  vim

alpine/base/debian-build-kernel/Makefile

@@ -1,14 +0,0 @@
-# no easy hashing scheme for Debian, will switch to Alpine soon so temporarily use sha256 
-.PHONY: push
-
-BASE=debian:jessie
-IMAGE=debian-build-kernel
-
-TAG := $(shell cat /dev/urandom | od -N6 -t x2 | head -n1 | cut -b9- | sed 's/ //g')
-
-push:
-	docker pull $(BASE)
-	tar cf - Dockerfile | docker build --no-cache -t mobylinux/$(IMAGE):$(TAG) -
-	docker tag mobylinux/$(IMAGE):$(TAG) mobylinux/$(IMAGE):latest
-	docker push mobylinux/$(IMAGE):$(TAG)
-	docker push mobylinux/$(IMAGE):latest

alpine/kernel/Dockerfile

@@ -1,4 +1,4 @@
-FROM mobylinux/debian-build-kernel:a009a11bf0ad
+FROM mobylinux/alpine-build-c:50a89f207d5fc98ce750d694077c75a31ab7937d
 
 ARG KERNEL_VERSION=4.4.22
 
@@ -19,8 +19,8 @@ RUN git clone -b "$AUFS_BRANCH" "$AUFS_REPO" /aufs && \
     git checkout -q "$AUFS_COMMIT"
 
 # aufs-util 20151116
-ENV AUFS_TOOLS_REPO https://github.com/Distrotech/aufs-util.git
+ENV AUFS_TOOLS_REPO https://github.com/ncopa/aufs-util.git
-ENV AUFS_TOOLS_COMMIT b5e7e204036da5e815ddec15a847a03c232771b4
+ENV AUFS_TOOLS_COMMIT 3b7c5e262b53598a8204a915e485489c46d4e7a4
 
 # Download aufs tools
 RUN git clone ${AUFS_TOOLS_REPO} && \
@@ -61,11 +61,10 @@ RUN cd /linux && \
         patch -p1 < "$patch"; \
     done
 
-RUN jobs=$(nproc); \
+RUN cd /linux && \
-    cd /linux && \
     make defconfig && \
     make oldconfig && \
-    make -j ${jobs} && \
+    make KCFLAGS="-fno-pie" && \
     make INSTALL_MOD_PATH=/tmp/kernel-modules modules_install && \
     ( cd /tmp/kernel-modules && tar cf /kernel-modules.tar . ) && \
     make INSTALL_HDR_PATH=/tmp/kernel-headers headers_install
@@ -76,6 +75,6 @@ RUN cd /aufs-util && \
     CPPFLAGS="-I/tmp/kernel-headers/include" CFLAGS=$CPPFLAGS LDFLAGS=$CPPFLAGS make && \
     DESTDIR=/tmp/aufs-utils make install && \
     rm -rf /tmp/aufs-utils/usr/lib /tmp/aufs-utils/usr/share && \
-    cd /tmp/aufs-utils && tar cf /aufs-utils.tar .
+    cd /tmp/aufs-utils && rm libau* && tar cf /aufs-utils.tar .
 
 RUN printf "KERNEL_SOURCE=${KERNEL_SOURCE}\nAUFS_REPO=${AUFS_REPO}\nAUFS_BRANCH=${AUFS_BRANCH}\nAUFS_COMMIT=${AUFS_COMMIT}\nAUFS_TOOLS_REPO=${AUFS_TOOLS_REPO}\nAUFS_TOOLS_COMMIT=${AUFS_TOOLS_COMMIT}\n" > /kernel-source-info

alpine/packages/9pmount-vsock/Dockerfile

@@ -1,4 +1,4 @@
-FROM mobylinux/alpine-build-c:1ea690a7438cdd8a5965eaa034e0a0c521d9cb40
+FROM mobylinux/alpine-build-c:50a89f207d5fc98ce750d694077c75a31ab7937d
 
 COPY . /9pmount-vsock
 

alpine/packages/nc-vsock/Dockerfile

@@ -1,4 +1,4 @@
-FROM mobylinux/alpine-build-c:1ea690a7438cdd8a5965eaa034e0a0c521d9cb40
+FROM mobylinux/alpine-build-c:50a89f207d5fc98ce750d694077c75a31ab7937d
 
 COPY . /nc-vsock
 

alpine/packages/tap-vsockd/Dockerfile

@@ -1,4 +1,4 @@
-FROM mobylinux/alpine-build-c:1ea690a7438cdd8a5965eaa034e0a0c521d9cb40
+FROM mobylinux/alpine-build-c:50a89f207d5fc98ce750d694077c75a31ab7937d
 
 COPY . /tap-vsockd
 

alpine/packages/transfused/Dockerfile

@@ -1,4 +1,4 @@
-FROM mobylinux/alpine-build-c:1ea690a7438cdd8a5965eaa034e0a0c521d9cb40
+FROM mobylinux/alpine-build-c:50a89f207d5fc98ce750d694077c75a31ab7937d
 
 COPY . /transfused