1.18 not available on docker hub

[daveisfera]

Is your feature request related to a problem? Please describe.

This repo contains 1.18 but it's not available on docker hub

Describe the solution you'd like

Publish 1.18 to docker hub

Describe alternatives you've considered

N/A

Additional context

Switching the default tag to be debian based ( see #422 ) as part of this would be a good time so it's happening on at least a minor version rather than a point one

[Watson1978]

Seems Fluentd v1.18 image has been published properly.

• https://hub.docker.com/r/fluent/fluentd/tags?name=v1.18
• https://hub.docker.com/_/fluentd/tags?name=v1.18

[kenhys]

Currently v1.16 and v1.18 was maintained on there.
https://hub.docker.com/r/fluent/fluentd/tags?name=v1.18

[daveisfera]

Oh, they're not listed on the Overview page and you have to scroll down the Tags list a bit to see them, so that's why I didn't notice them. Also, the fact that there's the extra -1 or -1.1 at the end makes it hard to know what the actual tag is since they're not listed on Overview