Disable PTY when working with docker init script

[Ichimonji10]

Docker has a non-standard approach to daemonizing: docker -d stays in the
foreground, rather than forking in to the background. This, combined with the
naive init script distributed with docker, can cause commands like ssh -t user@host service docker restart to silently fail. For more information, see:

• Init scripts frequently fail to start their daemons fabric/fabric#395 (comment)
• Init scripts frequently fail to start their daemons fabric/fabric#395 (comment)
• [UPSTREAM] Doesn't detach in daemon mode moby/moby#2758

[JacobCallahan]

ACK

[Ichimonji10]

>>> from fabric.api import run
>>> run('service docker restart', pty=False)
No hosts found. Please specify (single) host string for connection: root@<snip>
[root@<snip>] run: service docker restart
[root@<snip>] Login password for 'root': 
[root@<snip>] out: Stopping docker: [  OK  ]
[root@<snip>] out: Starting docker:       [  OK  ]
[root@<snip>] out: 

'Stopping docker: [  OK  ]\r\nStarting docker:\t[  OK  ]'
>>> run('service docker status && docker ps')
[root@<snip>] run: service docker status && docker ps
[root@<snip>] out: docker (pid  18494) is running...
[root@<snip>] out: CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS              PORTS               NAMES
[root@<snip>] out: 

'docker (pid  18494) is running...\r\nCONTAINER ID        IMAGE               COMMAND             CREATED             STATUS              PORTS               NAMES'

[elyezer]

ACK