Non-numeric link alias

[aanand]

Docs could use a once-over. Aside from the homepage quick start, I haven't yet gone through the tutorials to make sure they definitely still work.

[d11wtq]

I've never actually tried getting a DB console that way. I create a second service called dbconsole with the appropriate command and fig run --rm dbconsole. It definitely is incorrect for a service to link to itself (it's not possible, at least for the first instance of the service). If fig run supported a --link command line option, this would be possible though. Here's what I do:

db:
  image: d11wtq/postgres

dbconsole:
  image: d11wtq/postgres
  links:
    - db:db
  environment:
    - PGPASSWORD=default
  command: psql -U default -h db

Then:

fig up -d db

fig run --rm dbconsole

I think it does make a some sense for service automagically to link to itself for all but the first instance though.

[d11wtq]

Ah, just saw @aanand's comment. Sounds like that is already the behaviour, I just never knew!

[bfirsh]

Run commands for services link to themselves. If the db service is running then fig run db ... should have a link called db_1.

[d11wtq]

Yes, that is indeed useful, thanks. I'll still keep doing my dbconsole thing, just because it's easier to type, but self-linking is definitely a sensible default.

[aanand]

Rebased onto #395.

[bfirsh]

LGTM