Feature Request: Support multiple, remote Docker hosts

[Famku]

Hi,

nice app.

Is it possible to add remote hosts via tcp?

[AlexGustafsson]

Thanks. Are you referring to Docker hosts? The current intention is for Cupdate to handle one host. But I don't see an issue with that being a remote one.

[Famku]

One dasboard for multiple docker hosts, like dozzle

[AlexGustafsson]

@Famku is it important for you to know on which host Cupdate found the image? It would probably be quite easy to support multiple remote Docker hosts. Cupdate would still graph all the dependencies correctly - no matter on what host they were found. It would require additional work to also track the host of each image as the original intention was for Cupdate to scan the platform it's running on. If you're using Docker Swarm I think it should already work out of the box.

[Famku]

I would be good to know on which host Cupdate found the image, but it is not very important.

[AlexGustafsson]

I've got the initial support implemented now, without support for knowing the origin host. Please try it out and use this issue to report any problems you face. The changes are available in the latest tag.

CUPDATE_DOCKER_HOST=tcp://localhost:8080

You can also specify multiple hosts. Useful if you're running Cupdate on one host and want to monitor another as well.

CUPDATE_DOCKER_HOST=unix:///var/run/docker.sock,tcp://localhost:8080

[Famku]

It works - thank you for this quick implementation

but tcp port should be 2375 not 8080

[AlexGustafsson]

but tcp port should be 2375 not 8080

Thanks for clarifying that. There are no default ports, I just used 8080 as an example.

[AlexGustafsson]

Closing as completed via #58. Thanks for reporting the issue.