I expect an Azure self-hosted agent is required due to large storage requirements.
you can reuse the downloads and sstate-cache folders that it generated to speed up future builds (sometimes called "incremental" or "short" builds)
rm_work drastically reduces the storage space used while downloads and sstate-cache drastically reduce the build time, usually to under 30 minutes i.e. something that is acceptable for continuous integration
INHERIT += "rm_work"
DL_DIR = "/mnt/resource/downloads"
SSTATE_DIR = "/mnt/resource/sstate-cache"