Ensure gunicon is pid 1 in docker scripts
Ensure gunicon is pid 1 in docker scripts

This ensures operations like |docker restart| send signials to gunicorn which
will handle them correctly (where as previously bash would just ignore them)

wlach/treeherder,rail/treeherder,vaishalitekale/treeherder,avih/treeherder,deathping1994/treeherder,glenn124f/treeherder,deathping1994/treeherder,parkouss/treeherder,rail/treeherder,wlach/treeherder,deathping1994/treeherder,edmorley/treeherder,jgraham/treeherder,wlach/treeherder,avih/treeherder,akhileshpillai/treeherder,tojonmz/treeherder,KWierso/treeherder,tojon/treeherder,sylvestre/treeherder,sylvestre/treeherder,akhileshpillai/treeherder,akhileshpillai/treeherder,sylvestre/treeherder,deathping1994/treeherder,kapy2010/treeherder,tojon/treeherder,avih/treeherder,avih/treeherder,adusca/treeherder,parkouss/treeherder,vaishalitekale/treeherder,akhileshpillai/treeherder,rail/treeherder,parkouss/treeherder,gbrmachado/treeherder,tojon/treeherder,jgraham/treeherder,KWierso/treeherder,kapy2010/treeherder,adusca/treeherder,avih/treeherder,gbrmachado/treeherder,tojonmz/treeherder,adusca/treeherder,avih/treeherder,vaishalitekale/treeherder,glenn124f/treeherder,edmorley/treeherder,sylvestre/treeherder,moijes12/treeherder,parkouss/treeherder,kapy2010/treeherder,tojonmz/treeherder,gbrmachado/treeherder,sylvestre/treeherder,tojon/treeherder,gbrmachado/treeherder,tojonmz/treeherder,glenn124f/treeherder,wlach/treeherder,moijes12/treeherder,KWierso/treeherder,moijes12/treeherder,adusca/treeherder,edmorley/treeherder,moijes12/treeherder,jgraham/treeherder,parkouss/treeherder,vaishalitekale/treeherder,kapy2010/treeherder,moijes12/treeherder,rail/treeherder,rail/treeherder,tojonmz/treeherder,vaishalitekale/treeherder,jgraham/treeherder,glenn124f/treeherder,adusca/treeherder,deathping1994/treeherder,gbrmachado/treeherder,parkouss/treeherder,gbrmachado/treeherder,vaishalitekale/treeherder,KWierso/treeherder,akhileshpillai/treeherder,akhileshpillai/treeherder,kapy2010/treeherder,glenn124f/treeherder,jgraham/treeherder,adusca/treeherder,moijes12/treeherder,deathping1994/treeherder,tojonmz/treeherder,wlach/treeherder,sylvestre/treeherder,jgraham/treeherder,glenn124f/treeherder,wlach/treeherder,edmorley/treeherder,rail/treeherder