contrib/dockerdeb

mergestate: add a constructor that sets up a clean merge state

Eventually, we'll move the read call out of the constructor. This will:
- avoid unnecessary reads when we're going to nuke the merge state anyway
- avoid raising an exception if there's an unsupported merge record

'clean' seems like a good name for it because I wanted to avoid anything with
the word 'new' in it, and 'reset' is more an action performed on a merge state
than a way to get a new merge state.

Thanks to Martin von Zweigbergk for feedback about naming this.

#!/bin/bash -eu

. $(dirname $0)/dockerlib.sh
. $(dirname $0)/packagelib.sh

BUILDDIR=$(dirname $0)
export ROOTDIR=$(cd $BUILDDIR/..; pwd)

checkdocker

DEBPLATFORM="$1"
PLATFORM="debian-$1"
shift # extra params are passed to build process

OUTPUTDIR=${OUTPUTDIR:=$ROOTDIR/packages/$PLATFORM}

initcontainer $PLATFORM

# debuild only appears to be able to save built debs etc to .., so we
# have to share the .. of the current directory with the docker
# container and hope it's writable. Whee.
dn=$(basename $PWD)

if [ $(uname) = "Darwin" ] ; then
    $DOCKER run -u $DBUILDUSER --rm -v $PWD/..:/mnt $CONTAINER \
            sh -c "cd /mnt/$dn && make clean && make local"
fi
$DOCKER run -u $DBUILDUSER --rm -v $PWD/..:/mnt $CONTAINER \
  sh -c "cd /mnt/$dn && DEB_BUILD_OPTIONS='${DEB_BUILD_OPTIONS:=}' contrib/builddeb --build --release $DEBPLATFORM"
contrib/builddeb --cleanup --release $DEBPLATFORM
if [ $(uname) = "Darwin" ] ; then
    $DOCKER run -u $DBUILDUSER --rm -v $PWD/..:/mnt $CONTAINER \
            sh -c "cd /mnt/$dn && make clean"
fi