Add a version label to containers.

Signed-off-by: Daniel Nephin <[email protected]>

compose/__init__.py

@@ -1,4 +1,3 @@
 from __future__ import unicode_literals
-from .service import Service  # noqa:flake8
 
 __version__ = '1.3.0dev'

compose/const.py

@@ -3,3 +3,4 @@
 ONE_OFF_LABEL = 'com.docker.compose.oneoff'
 PROJECT_LABEL = 'com.docker.compose.project'
 SERVICE_LABEL = 'com.docker.compose.service'
+VERSION_LABEL = 'com.docker.compose.version'

compose/service.py

@@ -10,12 +10,14 @@
 from docker.errors import APIError
 from docker.utils import create_host_config, LogConfig
 
+from . import __version__
 from .config import DOCKER_CONFIG_KEYS
 from .const import (
     CONTAINER_NUMBER_LABEL,
     ONE_OFF_LABEL,
     PROJECT_LABEL,
     SERVICE_LABEL,
+    VERSION_LABEL,
 )
 from .container import Container
 from .progress_stream import stream_output, StreamOutputError
@@ -551,6 +553,7 @@ def build_container_labels(label_options, service_labels, number, one_off=False)
     labels = label_options or {}
     labels.update(label.split('=', 1) for label in service_labels)
     labels[CONTAINER_NUMBER_LABEL] = str(number)
+    labels[VERSION_LABEL] = __version__
     return labels
 
 

tests/integration/service_test.py

@@ -8,11 +8,11 @@
 import shutil
 import six
 
-from compose import Service
 from compose.service import (
     CannotBeScaledError,
-    build_extra_hosts,
     ConfigError,
+    Service,
+    build_extra_hosts,
 )
 from compose.container import Container
 from docker.errors import APIError

tests/unit/service_test.py

@@ -7,7 +7,7 @@
 import docker
 from requests import Response
 
-from compose import Service
+from compose.service import Service
 from compose.container import Container
 from compose.const import SERVICE_LABEL, PROJECT_LABEL, ONE_OFF_LABEL
 from compose.service import (