Add Ubuntu binary build script

Because Ubuntu zsl compression breaks aptly, which breaks my heart

ubuntu-icinga-build-deb-binary

+#!/bin/bash
+
+set -e
+# shellcheck source=functions-debian.sh
+. "$(dirname "$(readlink -f "$0")")"/functions-debian.sh
+
+# enabling ccache
+echo "[ enabling ccache ]"
+PATH=/usr/lib/ccache:"$PATH"
+export CCACHE_DIR="${WORKDIR}/ccache"
+env | grep -E '^(PATH=|CCACHE)'
+
+if [ -x /usr/sbin/update-ccache-symlinks ]; then
+  echo "Running update-ccache-symlinks"
+  sudo /usr/sbin/update-ccache-symlinks
+fi
+
+# reset ccache statistics
+# so we now the statistics of the new build
+if [ -d "${CCACHE_DIR}" ]; then
+  ccache -z # (--zero-stats)
+fi
+
+# use eatmydata if present
+eatmydata=
+if command -v eatmydata >/dev/null; then
+  eatmydata=eatmydata
+fi
+
+if [ -n "$ICINGA_BUILD_APTCACHER" ]; then
+  echo "[ enable apt-cacher ]"
+  echo "Acquire::http::Proxy \"${ICINGA_BUILD_APTCACHER}\";" | sudo tee /etc/apt/apt.conf.d/999cache
+  echo
+fi
+
+echo "[ apt-get update ]"
+# absolute apt-get path because of
+# "eatmydata: unable to find 'apt-get' in PATH" on Ubuntu Hirsute
+sudo $eatmydata /usr/bin/apt-get update
+
+echo "[ Extracting source to build directory ]"
+(
+  set -ex
+  cd "${BUILDDIR}/"
+  set -e
+  if [ -d "${ICINGA_BUILD_PROJECT}" ]; then
+    set -x
+    chmod -R u+w "${ICINGA_BUILD_PROJECT}"
+  fi
+  set -x
+  rm -rf "${ICINGA_BUILD_PROJECT}"
+  dpkg-source -x ./*.dsc "${ICINGA_BUILD_PROJECT}"
+)
+
+echo "[ Installing build dependencies ]"
+(
+  set -ex
+  cd "${BUILDDIR}/${ICINGA_BUILD_PROJECT}"
+  if [[ "$(uname -m)" = arm* ]]; then
+    # avoid aptitude, since it crashed with qemu-arm-static for some reason...
+    # qemu:handle_cpu_signal received signal outside vCPU context
+    sudo DEBIAN_FRONTEND=noninteractive $eatmydata /usr/lib/pbuilder/pbuilder-satisfydepends-experimental
+  elif command -v aptitude >/dev/null && [ -x /usr/lib/pbuilder/pbuilder-satisfydepends-aptitude ]; then
+    sudo DEBIAN_FRONTEND=noninteractive $eatmydata /usr/lib/pbuilder/pbuilder-satisfydepends-aptitude
+  else
+    sudo DEBIAN_FRONTEND=noninteractive $eatmydata /usr/lib/pbuilder/pbuilder-satisfydepends
+  fi
+)
+
+# Building the package
+binopts=
+if [ "${ICINGA_BUILD_ARCH}" != "${ICINGA_BUILD_DEB_DEFAULT_ARCH}" ]; then
+  binopts="-B"
+fi
+
+echo "[ Building binary package ]"
+(
+  set -ex
+  cd "${BUILDDIR}/${ICINGA_BUILD_PROJECT}"
+  # Remove source build metadata before binary build
+  rm -rf ../*.changes ../*.buildinfo
+  dpkg-buildpackage -Zxz -rfakeroot -uc -us $binopts
+)
+
+if [ -d "${CCACHE_DIR}" ]; then
+  cached_files="$(find "${CCACHE_DIR}" -type f ! -name ccache.conf ! -name stats | wc -l)"
+  if [ "$cached_files" -eq 0 ]; then
+    echo "Removing empty ccache dir: ${CCACHE_DIR}"
+    rm -rf "${CCACHE_DIR}"
+  else
+    echo "[ ccache stats ]"
+    ccache -s | tee build/ccache-stats.txt # (--show-stats)
+    echo
+  fi
+fi
+
+echo "[ Running Lintian ]"
+(
+  set -ex
+  cd "${BUILDDIR}/${ICINGA_BUILD_PROJECT}/"
+  lintian | tee ../lintian-binary.log
+) || [ "${ICINGA_BUILD_IGNORE_LINT}" -eq 1 ]
+
+if [ "${ICINGA_BUILD_CLEANUP:=1}" -gt 0 ]; then
+  echo "[ Cleanup Build Directory ]"
+  (
+    set -ex
+    chmod -R u+w "${BUILDDIR:?}/${ICINGA_BUILD_PROJECT}/"
+    rm -rf "${BUILDDIR:?}/${ICINGA_BUILD_PROJECT}/"
+  )
+fi