adds workflow for multiarch builds (linux/amd64, linux/arm64) being published to ghcr.io

[mmoscher]

Changelog

• introduces new GHA workflow to build and publish spilo multiarch images on ghcr.io. Workflow is triggered on tag creation.
• currently linux/amd64 and linux/arm64 images are built
• linux/amd64 build is tested using postgres-appliance/tests/test_spilo.sh
• Note the linux/arm64 takes much more time, due to emulation, then the linux/amd64 build (7 vs. 120min)

Changes

• adds GHA workflow .github/workflows/publish-ghcr-container.yaml
• extends postgres-appliance/tests/docker-compose.yml to allow spilo image definition using environment variable, cf. postgres-appliance/tests/README
• adds small section in the README mentioning that multiarch builds can be found on ghcr.io

Tests

Tests were done by tagging the forked repo. Tag p1-2 was successful.

• workflow run can be found here: https://github.com/mmoscher/spilo/actions/runs/3245461373/jobs/5323031631
• multiarch images can be found here: https://github.com/mmoscher/spilo/pkgs/container/spilo-14

Follow-Up:

• wal-g multiarch builds are now available. Thus, Add build support on non-amd64 platforms #664 can be reverted and additional self-builds can be omitted. Finally, the arm64 build-time should decrease enormously. (useless if switch to postgresql 15 is done)

[mmoscher]

@CyberDem0n can you have a look on the follow-up? If you think it's a valid solution, I'll file another PR.

[hughcapet]

As for the follow-up, it is a valid solution but only unless feature/postgresql-15 is merged. We have recently migrated to Ubuntu 22.04 there and will actually build wal-g for both platforms.

[mmoscher]

As for the follow-up, it is a valid solution but only unless feature/postgresql-15 is merged. We have recently migrated to Ubuntu 22.04 there and will actually build wal-g for both platforms.

thanks for the info. To this end it sounds more like unnecessary work and I would leave it as is

[mmoscher]

@hughcapet suggested changes are made. Please have a re-review :)

[Jan-M]

@mmoscher von Aachener zu Aachener - great work. thanks for helping out.

[Jan-M]

👍

[hughcapet]

👍

[mmoscher]

Thank's @Jan-M & @hughcapet =)