Add git installation to docker guide
-rw-r--r-- 100 .gitignore
-rw-r--r-- 64 .gitreview
drwxr-xr-x - 3rd_party
-rw-r--r-- 499 INFO
-rw-r--r-- 1628 INFO.yaml
-rw-r--r-- 624 LICENSE
drwxr-xr-x - baro_tests
drwxr-xr-x - baro_utils
drwxr-xr-x - ci
drwxr-xr-x - docker
drwxr-xr-x - docs
drwxr-xr-x - mibs
drwxr-xr-x - puppet-barometer
-rw-r--r-- 369 requirements.txt
-rw-r--r-- 277 setup.cfg
-rw-r--r-- 1030 setup.py
drwxr-xr-x - src
drwxr-xr-x - systems
-rw-r--r-- 481 tox.ini