Fixes#2957
- replace `docker stop` with `weaveuitl stop-container`
- replace `docker kill` with `weaveutil kill-container`
- replace `docker rm` with `weaveutil remove-container`
- replace `docker run` with minimal `weaveutil container-run`
- replace `docker inspect -f {{.ID}}` with `weaveutil container-id`
- replace data-only container `docker create` with `weaveutil create-volume-container`
- remove `docker inspect` dependencies from `weave` script
`rewrite_etc_hosts` and `with_container_fqdn`
- rework `weave` script `check_running` and `check_not_running` to use `weaveutil`
- rework `weave version` to use `weaver` /report API or `weaver --version` if not running
- rework `weave setup`'s `docker pull` to run locally rather than in `weaveexec` container
Note: we no longer need to detect awsvpc when launching.
The "AWS VPC" mode is now set via the `--awsvpc` flag.
Before we had to "detect" it when the proxy was potentially started
later, after the router had started.
We drop WEAVEPROXY_DOCKER_ARGS as obsolete.
They seem to stop Docker using its build cache.
Removing the line entirely stops weaveproxy from working, as it
assumes it can exec `./weave` from the current directory.
- Create an auxilliary container 'weavevolumes' to hold the '/w/w'
files, and map into that instead of creating new volumes every time.
- Show "/bin/false" as its command in `docker ps` instead of
"/home/weave/sigproxy".
- Remove volumes when cleaning up smoketest containers.
We copy docker.sock owner to symlinks. Permissions are not copied,
because the permissions will inherit from the target.
use versioned exec image to create symlinks
Marc Carré