Builds VM and container images for PostgreSQL CI, currently utilizing cirrus-ci. See src/tools/ci/README for more details.
An example cirrus-ci use of these images is Postgres' .cirrus.yml
Postgres' CI README explains how to enable CI utilizing these image for a repository.
The VM images are built using packer, the container images using docker. The built images are then stored within google cloud services, as cirrus-ci runs most of its instances within google cloud.
Instructions for setting up this build pipeline are in gcp_project_setup.txt.