Move scaffolding to Docker Swarm

[yajo]

WIP of moving scaffolding to docker-compose file v3.1 and supporting only Docker Swarm (>=1.13) in prod.yaml can be found in https://github.com/Tecnativa/docker-odoo-base/tree/scaffolding-composefile3.

[lasley]

IMO it feels a bit early to deprecate the older compose files. This is just scaffold though, right? So really it's just a sample, and the user is free to use whatever?

[yajo]

Yeah, of course.

There's still docker/compose#4315, and I'm also considering moving the scaffolding to make use of ansible-container instead of plain docker-compose.

Still nothing decided, but keep an eye on this issue for progress 😉

[lasley]

Ahahahah I'm so happy you guys are loving Ansible!

[yajo]

OK, now there's a way to define different environments with v3 of docker compose file: moby/moby#31101 (comment) (it was there before, I just didn't read carefully enough).

That would count as a breaking change, but allows to move for v3. Still I'm not sure if ansible would support having v3, which is very important for us too...

[lasley]

I still think this move is quite early personally. Also, supporting only Swarm seems like cutting out a good amount of other uses out of the picture. We use Kubernetes here, and likely won't be switching any time soon.

Ansible - yeah it uses docker-py if you're using the docker module, which isn't compatible with docker-compose. People on the interwebz look to be using docker shell commands when newer syntax is required.

[yajo]

Well, switching to docker compose file v3+ does not force swarm, it just enables it. You can still use swarmless docker with that file version.

[yajo]

Will do later in https://github.com/Tecnativa/doodba-scaffolding