Fig does not exit if container stops before attaching

[bfirsh]

When running fig up, if a container stops before attaching it seems like Fig will only attach to the containers that are left running. The output from the stopped container is also not displayed.

$ cat > fig.yml
web:
  build: ubuntu
  command: echo hello world
db:
  image: postgres:9.1
$ fig up
Creating example_web_1...
Creating example_db_1...
Attaching to example_db_1
db_1 | The files belonging to this database system will be owned by user "postgres".
db_1 | This user must also own the server process.
...

[aanand]

This is probably caused by a race condition: the container stops before we attach to it.

At some point fig up switched from attaching before starting to vice versa - we should switch it back.