Hi there! I was wondering if it is possible to use the
fly-builder in my org to be able to remotely build a Dockerfile before an app deployment? (I just want to build and create an image tag, not deploy)
My use case:
I have a Raft cluster of machines deployed in different regions on Fly. To safely upgrade, the recommendation is to
- update the followers of the cluster
- spin down leader
- a new leader is selected
- update the old leader
- now all machines are running the updated code
I know I can build an image locally and use that when doing a
fly deploy --image XXX. But I run an M2 mac and I’m worried about issues with building on Mac and running on the architecture that Fly uses. (I dunno how much of a problem this is nowadays but it was a problem a while back)
Ideally I’d like to be able to use
DOCKER_HOST (which is the fly-builder url) and be able to send off my Dockerfile to be built by the
fly-builder and then when I do the following to update specific machines:
fly machines update --image <image ref> <machine ID>
I can then use the
registry.fly.io image that was built in the remote builder.
Is it only possible to do something similar if I deploy my own machine with Docker installed to build remotely as seen in this question?
Thanks a lot!