A script to test Fedora specs PRs in docker: builds RPM in a container

build_rpm.sh

#!/bin/bash
set -e

PKG=${PWD##*/}
#Detect which version should be used based on upstream branch
TRACKING=$(git rev-parse --abbrev-ref --symbolic-full-name @{u})
BRANCH=$(basename $TRACKING)
if [[ "$BRANCH" == "master" ]]; then
  DEST=rawhide
else
  DEST=${BRANCH:1:3}
fi
echo "Converted tracking branch $BRANCH to $DEST"

CONTAINER="${PKG}-${DEST}"

run() {
  echo -e "\nRunning $1"
  sudo docker exec -ti ${CONTAINER} sh -c "$1"
}

# Optionally cleanup the container
if [ "$1" == "--cleanup" ]; then
  sudo docker rm -v -f ${CONTAINER} > /dev/null || true
fi

# Check if a new container needs to be created
found=$(sudo docker container ls -q -f "name=${DEST}" | wc -l)
if [ $found == 0 ]; then
  echo "Pulling latest fedora:${DEST} image"
  sudo docker pull registry.fedoraproject.org/fedora:${DEST}

  echo "\nStarting ${CONTAINER}"
  sudo docker run -d --name $CONTAINER -v ${PWD}:/code -ti registry.fedoraproject.org/fedora:${DEST} sleep infinity
else
  echo "Reusing existing container for ${DEST} build"
fi

run "dnf install -y rpmdevtools dnf-plugins-core gcc"
run "rm -rf /root/rpmbuild && mkdir -p /root/rpmbuild/SOURCES"

echo "Updating /code in container"
git ls-files | xargs -n1 -i sudo docker cp {} $CONTAINER:/code

echo "----"
echo "Building RPM"
run "spectool -g -R /code/*.spec -D"
run "cp -rf /code/*.patch /root/rpmbuild/SOURCES"
run "dnf builddep -y /code/*.spec"
run "rpmbuild -ba /code/*.spec"
echo "----"

# Copy RPMS and SRPMs back
LOCAL_RPMS="/tmp/rpm_build"
echo "Copying rpms back to $LOCAL_RPMS"
sudo rm -rf $LOCAL_RPMS && mkdir -p $LOCAL_RPMS
sudo docker cp $CONTAINER:/root/rpmbuild/RPMS $LOCAL_RPMS
sudo docker cp $CONTAINER:/root/rpmbuild/SRPMS $LOCAL_RPMS
tree $LOCAL_RPMS