We will no longer support CentOS, Fedora, and Opensuse as installation targets. These are not actively maintained by anyone with commit rights and occasionally cause issues for users as they are not tested during the release process.
Rather than have subpar support for an untested operating system, we're removing support for them completely. Users of these operating systems should take a look migration to the docker-based installation method, which will always be tested and supported by the project.
Additionally, drop support for Debian 9 as it is now EOL.
This specifically targets Raspbian Buster, though releases may work on other debian-based operating systems.
Note that this does _not_ port buildpacks - either herokuish or pack - to Raspbian, and it is likely that users will need to use pack for buildpack support (if/when it is supported on ARM) or Dockerfile for image building.
This makes the installation a bit more secure by ensuring a user does not accidentally expose a way for unauthorized users to add new ssh keys to the system.
Additionally, this removes the extra HOSTNAME file to make the initial install process easier (that file was not modifiable by any dokku commands.
Closes#2247
As of April 2021, it will no longer be an LTS release, and thus us supporting it will increase maintenance burdens.
Also switch CI to use 18.04, so as to test what we currently support.
Closes#4505
Rather than try and do something fancy on tag creation via workflows - which won't trigger due to workflows not being able to trigger other workflows without using workflow_run on the downstream workflow as a trigger - we just do all the releasing at once. This makes it easy to understand whether a release fully completed.
While the latest packages may continue to work on other releases, we will no longer officially support these releases, nor will we distribute packages.
