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RPM build containers for Red Hat based various distros

Available versions

Available versions can be located by visiting Docker Hub Repository.

Fetch image

BUILDER_VERSION=centos-7
docker pull alectolytic/rpmbuilder:${BUILDER_VERSION}

Run

In this example SOURCE_DIR contains spec file and sources for the the RPM we are building.

# set env variables for conviniece
SOURCE_DIR=$(pwd)/sources
OUTPUT_DIR=$(pwd)/output

# create a output directory
mkdir -p ${OUTPUT_DIR}

# make SELinux happy
chcon -Rt svirt_sandbox_file_t ${OUTPUT_DIR} ${SOURCE_DIR}

# build rpm
docker run \
    -v ${SOURCE_DIR}:/sources \
    -v ${OUTPUT_DIR}:/output \
    alectolytic/rpmbuilder:${BUILDER_VERSION}

The output files will be available in OUTPUT_DIR.

Debugging

If you are creating a spec file, it is often useful to have a clean room debugging environment. You can achieve this by using the following command.

docker run --rm -it --entrypoint bash \
    -v ${SOURCE_DIR}:/sources \
    -v ${OUTPUT_DIR}:/output \
    alectolytic/rpmbuilder:${BUILDER_VERSION}

This command will drop you into a bash shell within the container. From here, you can execute build to build the spec file. You can also iteratively modify the specfile and re-run build.

Volumes

The following volumes can be mounted from the host.

Volume Description
/sources Source to build RPM from
/output Output directory where all built RPMs and SRPMs are extracted to
/workspace Temporary workspace created for staging sources
/root/rpmbuild rpmbuild directory for debugging etc