Deprecate 'latest' tag on docker hub

[zorun]

We currently publish a "latest" tag on the docker hub: https://hub.docker.com/r/ihatemoney/ihatemoney

Some people tend to think this is a bad practice, because you can easily shoot yourself in the foot by upgrading without realising it. Using explicit version tags is usually preferred.

In addition, when we do releases on stable branches (like 6.1.2 today), we also update the "latest" tag. It means that as we release new and stable versions, the "latest" tag might point to 6.1.2, then 6.2.0, then 6.1.3... This can be confusing.

@youegraillot do you have an opinion about this?

Also, how can we deprecate this tag without breaking the workflow of people using it?

[zorun]

Any opinion?

[almet]

I'm not using docker myself, no opinion :-)