Add traitlet for reuse_layers_from
More accurate name in our context
@@ -72,6 +72,18 @@ class Repo2Docker(Application):
"""
)
+ reuse_layers_from = List(
+ [],
+ config=True,
+ help="""
+ List of images to try & re-use cached image layers from.
+
+ Docker only tries to re-use image layers from images built locally,
+ not pulled from a registry. We can ask it to explicitly re-use layers
+ from non-locally built images by through the 'cache_from' parameter.
+ """
+ )
+
buildpacks = List(
[
LegacyBinderDockerBuildPack,
@@ -407,7 +419,7 @@ class Repo2Docker(Application):
)
argparser.add_argument(
- '--cache-from',
+ '--reuse-layers-from',
action='append',
default=[],
help='Docker images to attempt to re-use cached layers from'
@@ -552,8 +564,8 @@ class Repo2Docker(Application):
if args.subdir:
self.subdir = args.subdir
- if args.cache_from:
- self.cache_from = args.cache_from
+ if args.reuse_layers_from:
+ self.reuse_layers_from = args.reuse_layers_from
self.environment = args.environment
@@ -729,7 +741,7 @@ class Repo2Docker(Application):
extra=dict(phase='building'))
for l in picked_buildpack.build(self.output_image_spec,
- self.build_memory_limit, build_args, self.cache_from):
+ self.build_memory_limit, build_args, self.reuse_layers_from):
if 'stream' in l:
self.log.info(l['stream'],
extra=dict(phase='building'))
