1. update and docker-compose;
2. Install helm and helm3.
3. dockerd-entrypoint.sh has been modify by commit image manually, so it should be updated.
4. Keyword <Get Matching Xpath Count> is no longer recommended in
library Selenium2Library. After Dockerfile is updated and image is going
to be rebuiled, library Selenium2Library has be updated to 3.0.0, but
not 1.8.0, so keyword must be upgraded.
Signed-off-by: Danfeng Liu (c) <danfengl@vmware.com>
