Fix truncated output in `fig run` - resolves #658

Signed-off-by: Michael Malet <MichaelMa@square-enix.com>
@dnephin - I've only removed the additional daemonized container call - if you look at line 328 of the same file, you can see that the removed line was identical to the one used when the `-d` option is passed. The fixes you've pointed out actually address another bug in this section of the code, unfortunately I'm not very familiar with the codebase or even python - could we create that as a separate bug?