Merge pull request #1570 from rrahn/feature/rtd_version_slug

Added RTD_VERSION_SLUG environment variable.

Author: agjohnson

readthedocs/doc_builder/environments.py

@@ -111,6 +111,9 @@ def run(self):
         environment = {}
         environment.update(self.environment)
         environment['READTHEDOCS'] = 'True'
+        if self.build_env is not None:
+            environment['READTHEDOCS_VERSION'] = self.build_env.version.slug
+            environment['READTHEDOCS_PROJECT'] = self.build_env.project.slug
         if 'DJANGO_SETTINGS_MODULE' in environment:
             del environment['DJANGO_SETTINGS_MODULE']
         if 'PYTHONPATH' in environment:
@@ -592,6 +595,8 @@ def create_container(self):
                     },
                 }),
                 detach=True,
+                environment={'READTHEDOCS_VERSION': self.version.slug,
+                             'READTHEDOCS_PROJECT': self.project.slug},
                 mem_limit=self.container_mem_limit,
             )
             client.start(container=self.container_id)