Merge branch 'feature/drush-aliases-in-docker' into '2.x'

Change drush.aliases execution context from local to DOCKER

This resolves right issues that I've seen happening under
certain circumstances.

See merge request !19

drush.py

@@ -65,7 +65,7 @@ def make(action='install'):
 
 
 @task
-@roles('local')
+@roles('docker')
 def aliases():
     """
     Copy conf/aliases.drushrc.php in the site environment.
@@ -73,7 +73,7 @@ def aliases():
 
     role = 'docker'
     drush_aliases = env.site_drush_aliases
-    workspace = env.workspace
+    workspace = env.docker_workspace
 
     if not h.fab_exists(role, drush_aliases):
         h.fab_run(role, 'mkdir -p {}'.format(drush_aliases))

helpers.py

@@ -56,7 +56,7 @@ if is_core_profile(env.site_profile):
   env.makefile = path.join(env.builddir, env.site_profile_makefile)
 else:
   env.makefile = path.join(env.builddir, env.site_profile, env.site_profile_makefile)
-env.site_drush_aliases = path.join(env.site_root, 'sites/all/drush')
+env.site_drush_aliases = path.join(env.docker_site_root, 'sites/all/drush')
 
 def fab_run(role="local", cmd="", capture=False):
     """