[fnoef]

Record the existing container id, rescale the service to 2 instances (hence bringing a second container up), wait for the second one to be healthy, (optional) stop directing traffic to the old container, wait a few seconds, stop the old container, rescale the service back to 1 instance.

[hamdingers]

Here's a CLI plugin that automates this: https://github.com/wowu/docker-rollout

[nojs]

Another vote for this - we’ve been using it for years without issues.

[Oras]

Blue Green Deployment. There must be a docker container to handle this or at least a bash script.

edit: thanks to next comment for referencing one