Dockerfile.build

#!/bin/sh
cd "$(dirname "$0")"  # jump to curdir
set -eu

# Pass these on the command line.
oscodename=${1:-debian/bullseye}  # debian/stretch
buildversion=$(sed -e '1!d;s/.*(//;s/).*//' changelog)
upname=asterisk-g72x
upversion=$(echo "$buildversion" | sed -e 's/-.*//;s/^[0-9]*://')
debepoch=$(echo "$buildversion" | sed -e '/^[0-9]*:/!d;s/:.*/:/')
debversion=$(echo "$buildversion" | sed -e 's/[^-]*-//;s/+[^+]*$//')

echo "Usage: $0 [$oscodename]"
echo ".. continuing"

osdistro=${oscodename%/*}   # debian (or ubuntu)
oscodename=${oscodename#*/} # stretch (or bionic)
case $osdistro/$oscodename in
debian/bullseye)osdistshort=deb; oscodenum=11;;
debian/buster)  osdistshort=deb; oscodenum=10;;
debian/stretch) osdistshort=deb; oscodenum=9;;
debian/jessie)  osdistshort=deb; oscodenum=8;;
debian/wheezy)  osdistshort=deb; oscodenum=7;;
ubuntu/jammy)   osdistshort=ubu; oscodenum=22.04;;
ubuntu/focal)   osdistshort=ubu; oscodenum=20.04;;
ubuntu/bionic)  osdistshort=ubu; oscodenum=18.04;;
ubuntu/xenial)  osdistshort=ubu; oscodenum=16.04;;
ubuntu/trusty)  osdistshort=ubu; oscodenum=14.04;;
*) echo "ERROR: undefined OS: $osdistro/$oscodename" >&2 && exit 1
esac
_shortver=$osdistshort$oscodenum

# Docker disallows certain tokens in versions.
dockversion=$(echo build-${upname}-${upversion}-${debversion}-${oscodename} |
    sed -e 's/[^0-9A-Za-z_.-]/_/g')

# Will build files.
docker build \
    --pull \
    --ulimit nofile=512 \
    --build-arg osdistro=$osdistro \
    --build-arg osdistshort=$osdistshort \
    --build-arg oscodename=$oscodename \
    --build-arg upname=$upname \
    --build-arg upversion=$upversion \
    --build-arg debepoch=$debepoch \
    --build-arg debversion=$debversion \
    -t $dockversion \
    -f Dockerfile \
    . || ret=$?
if test ${ret:-0} -ne 0; then
    echo "fail" >&2
    exit $ret
fi

# Copy files to ./Dockerfile.out
test -d Dockerfile.out/$oscodename || mkdir -p Dockerfile.out/$oscodename
docker run $dockversion sh -c 'cd /dist; tar -zc *' |
    tar -zxvC Dockerfile.out/$oscodename/ |
    sed -e 's#$# -> Dockerfile.out/'$oscodename'/#'