Scope should use fewer docker layers

[tomwilkie]

vagrant@ubuntu-14:~/src/github.com/weaveworks/scope$ ./scope launch
Unable to find image 'weaveworks/scope:latest' locally
Pulling repository weaveworks/scope
8987330a95fa: Pulling image (latest) from weaveworks/scope
8987330a95fa: Pulling image (latest) from weaveworks/scope, endpoint: https://registry-1.docker.io/v1/
8987330a95fa: Pulling dependent layers
511136ea3c5a: Download complete
a8be93256def: Download complete
2db66c93c72e: Pulling metadata
2db66c93c72e: Pulling fs layer
2db66c93c72e: Download complete
98b0c7b63452: Pulling metadata
98b0c7b63452: Pulling fs layer
98b0c7b63452: Download complete
22618500139b: Pulling metadata
22618500139b: Pulling fs layer
22618500139b: Download complete
bd7d0b16def3: Pulling metadata
bd7d0b16def3: Pulling fs layer
bd7d0b16def3: Download complete
6ff49fd79084: Pulling metadata
6ff49fd79084: Pulling fs layer
6ff49fd79084: Download complete
4371bc9dee57: Pulling metadata
4371bc9dee57: Pulling fs layer
4371bc9dee57: Download complete
9819431aea96: Pulling metadata
9819431aea96: Pulling fs layer
9819431aea96: Download complete
02289b89fa78: Pulling metadata
02289b89fa78: Pulling fs layer
02289b89fa78: Download complete
281e7cdd2aae: Pulling metadata
281e7cdd2aae: Pulling fs layer
281e7cdd2aae: Download complete
8987330a95fa: Pulling metadata
8987330a95fa: Pulling fs layer
8987330a95fa: Download complete
8987330a95fa: Download complete
Status: Downloaded newer image for weaveworks/scope:latest
bc267a103940127e67b2dda613f77a80400c104c5ecb08c2c5bf185215ff50bf