add persistance to Postresql container

[valentin2105]

Create a volume for Postgres datas. Because if you kill all containers without this volume, all users are losts.

[Wonderfall]

Same goes for redis :

  volumes:
    - ./redis:/data

[Gargron]

Does docker-compose automatically create these folders on the host, or do you have to create them yourself? Or does docker-compose complain if they're not there?

For the record when this option is not specified, the contains still use volumes, they're just anonymous volumes that are hard to find later.

[Wonderfall]

@Gargron docker-compose is smart and does all the magic for you. :)

[Gargron]

In that case please add @Wonderfall's suggested addition and I will merge

[valentin2105]

I think it's a better idea to specify the path for volumes, for easy backup for example.

[krainboltgreene]

This will break on local development in a vm (aka mac), since they wont have the right permissions.

[valentin2105]

So why not create a specific dev compose file ?

[Gargron]

While this is a good change for new installations, I have realized (the hard way from an admin trying this out) that this will make docker-compose break previous installations during update.

I am reverting this until we can figure out how to not brick people's existing configurations.

[jemus42]

Is @Wonderfall's redis addition really necessary? Because I'm one of those admins who lost their db because of a docker-compose down, but after I found the old postgres volume in var/lib/docker/volumes and mounted that for postgres, my database was intact again.

[Wonderfall]

@jemus42 /data contains the dump.rdb file.