git -version
| Possible result | Explanation |
|---|---|
| bash: git: No such file or directory | You need to install git |
| git version < 2.7 | You should upgrade git for security reasons |
| git version > 2.7 | You are all good |
If you need to install docker, start here:
https://git-scm.com/book/en/v2/Getting-Started-Installing-Git