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Re: [Qemu-devel] [PATCH v6 4/8] tests/docker/dockerfiles: new debian-boo
From: |
Alex Bennée |
Subject: |
Re: [Qemu-devel] [PATCH v6 4/8] tests/docker/dockerfiles: new debian-bootstrap.docker |
Date: |
Tue, 19 Jul 2016 10:00:27 +0100 |
User-agent: |
mu4e 0.9.17; emacs 25.0.95.10 |
Fam Zheng <address@hidden> writes:
> From: Alex Bennée <address@hidden>
>
> Together with the debian-bootstrap.pre script can now build an arbitrary
> architecture of Debian using debootstrap. This allows debootstrap to set
> up its first stage before the container is built.
>
> To build a container you need a command line like:
>
> DEB_ARCH=armhf DEB_TYPE=testing \
> ./tests/docker/docker.py build \
> --include-executable=arm-linux-user/qemu-arm debian:armhf \
> ./tests/docker/dockerfiles/debian-bootstrap.docker
>
> Although a number of non-debian systems package the debootstrap script
> it is fairly portable in itself. Assuming we have some sort of fakeroot
> implementation we can just clone the upstream repository and use the
> script from there.
>
> Signed-off-by: Alex Bennée <address@hidden>
> Message-id: address@hidden
Acked-by: Alex Bennée <address@hidden>
> ---
> tests/docker/dockerfiles/debian-bootstrap.docker | 21 ++++++
> tests/docker/dockerfiles/debian-bootstrap.pre | 87
> ++++++++++++++++++++++++
> 2 files changed, 108 insertions(+)
> create mode 100644 tests/docker/dockerfiles/debian-bootstrap.docker
> create mode 100755 tests/docker/dockerfiles/debian-bootstrap.pre
>
> diff --git a/tests/docker/dockerfiles/debian-bootstrap.docker
> b/tests/docker/dockerfiles/debian-bootstrap.docker
> new file mode 100644
> index 0000000..3a9125e
> --- /dev/null
> +++ b/tests/docker/dockerfiles/debian-bootstrap.docker
> @@ -0,0 +1,21 @@
> +# Create Debian Bootstrap Image
> +#
> +# This is intended to be pre-poluated by:
> +# - a first stage debootstrap (see debian-bootstrap.pre)
> +# - a native qemu-$arch that binfmt_misc will run
> +FROM scratch
> +
> +# Add everything from the context into the container
> +ADD . /
> +
> +# Patch all mounts as docker already has stuff set up
> +RUN sed -i 's/in_target mount/echo not for docker in_target mount/g'
> /debootstrap/functions
> +
> +# Run stage 2
> +RUN /debootstrap/debootstrap --second-stage
> +
> +# At this point we can install additional packages if we want
> +# Duplicate deb line as deb-src
> +RUN cat /etc/apt/sources.list | sed "s/deb/deb-src/" >> /etc/apt/sources.list
> +RUN apt-get update
> +RUN apt-get -y build-dep qemu
> diff --git a/tests/docker/dockerfiles/debian-bootstrap.pre
> b/tests/docker/dockerfiles/debian-bootstrap.pre
> new file mode 100755
> index 0000000..55850be
> --- /dev/null
> +++ b/tests/docker/dockerfiles/debian-bootstrap.pre
> @@ -0,0 +1,87 @@
> +#!/bin/sh
> +#
> +# Simple wrapper for debootstrap, run in the docker build context
> +#
> +FAKEROOT=`which fakeroot 2> /dev/null`
> +
> +exit_and_skip()
> +{
> + exit 3
> +}
> +
> +#
> +# fakeroot is needed to run the bootstrap stage
> +#
> +if [ -z $FAKEROOT ]; then
> + echo "Please install fakeroot to enable bootstraping"
> + exit_and_skip
> +fi
> +
> +# We check in order for
> +#
> +# - DEBOOTSTRAP_DIR pointing at a development checkout
> +# - PATH for the debootstrap script (installed)
> +#
> +# If neither option works then we checkout debootstrap from its
> +# upstream SCM and run it from there.
> +#
> +
> +if [ -z $DEBOOTSTRAP_DIR ]; then
> + DEBOOTSTRAP=`which debootstrap 2> /dev/null`
> + if [ -z $DEBOOTSTRAP ]; then
> + echo "No debootstrap installed, attempting to install from SCM"
> + DEBOOTSTRAP_SOURCE=https://anonscm.debian.org/git/d-i/debootstrap.git
> + git clone ${DEBOOTSTRAP_SOURCE} ./debootstrap.git
> + export DEBOOTSTRAP_DIR=./debootstrap.git
> + DEBOOTSTRAP=./debootstrap.git/debootstrap
> + fi
> +else
> + DEBOOTSTRAP=${DEBOOTSTRAP_DIR}/debootstrap
> + if [ ! -f $DEBOOTSTRAP ]; then
> + echo "Couldn't find script at ${DEBOOTSTRAP}"
> + exit_and_skip
> + fi
> +fi
> +
> +#
> +# Finally check to see if any qemu's are installed
> +#
> +BINFMT_DIR=/proc/sys/fs/binfmt_misc
> +if [ ! -e $BINFMT_DIR ]; then
> + echo "binfmt_misc needs enabling for a QEMU bootstrap to work"
> + exit_and_skip
> +else
> + # DEB_ARCH and QEMU arch names are not totally aligned
> + case "${DEB_ARCH}" in
> + amd64)
> + QEMU=qemu-i386
> + ;;
> + armel|armhf)
> + QEMU=qemu-arm
> + ;;
> + arm64)
> + QEMU=qemu-aarch64
> + ;;
> + powerpc)
> + QEMU=qemu-ppc
> + ;;
> + ppc64el)
> + QEMU=qemu-ppc64le
> + ;;
> + s390)
> + QEMU=qemu-s390x
> + ;;
> + *)
> + QEMU=qemu-${DEB_ARCH}
> + ;;
> + esac
> + if [ ! -e "${BINFMT_DIR}/$QEMU" ]; then
> + echo "No binfmt_misc rule to run $QEMU, can't bootstrap"
> + exit_and_skip
> + fi
> +fi
> +
> +echo "Building a rootfs using ${FAKEROOT} and ${DEBOOTSTRAP}"
> +
> +${FAKEROOT} ${DEBOOTSTRAP} --variant=buildd --foreign --arch=$DEB_ARCH
> $DEB_TYPE . http://httpredir.debian.org/debian || exit 1
> +exit 0
--
Alex Bennée
- [Qemu-devel] [PATCH v6 0/8] docker: Support building qemu-user powered docker test images, Fam Zheng, 2016/07/19
- [Qemu-devel] [PATCH v6 3/8] tests/docker/docker.py: check and run .pre script, Fam Zheng, 2016/07/19
- [Qemu-devel] [PATCH v6 2/8] tests/docker/docker.py: support --include-executable, Fam Zheng, 2016/07/19
- [Qemu-devel] [PATCH v6 6/8] docker: More sensible run script, Fam Zheng, 2016/07/19
- [Qemu-devel] [PATCH v6 1/8] tests/docker/docker.py: docker_dir outside build, Fam Zheng, 2016/07/19
- [Qemu-devel] [PATCH v6 4/8] tests/docker/dockerfiles: new debian-bootstrap.docker, Fam Zheng, 2016/07/19
- Re: [Qemu-devel] [PATCH v6 4/8] tests/docker/dockerfiles: new debian-bootstrap.docker,
Alex Bennée <=
- [Qemu-devel] [PATCH v6 5/8] tests/docker/docker.py: add update operation, Fam Zheng, 2016/07/19
- [Qemu-devel] [PATCH v6 7/8] docker: Fix exit code if $CMD failed, Fam Zheng, 2016/07/19
- [Qemu-devel] [PATCH v6 8/8] docker: Don't start a container that doesn't exist, Fam Zheng, 2016/07/19
- Re: [Qemu-devel] [PATCH v6 0/8] docker: Support building qemu-user powered docker test images, Alex Bennée, 2016/07/19
- Re: [Qemu-devel] [PATCH v6 0/8] docker: Support building qemu-user powered docker test images, Alex Bennée, 2016/07/19