[Docs] Mention need to create an initial git commit

[tsheiner]

Description

Minor issue.

At this point in Getting Started, you'll get an error unless you've created at least one git commit, which the narrative never explicitly tells you to do.

Are you sure this issue hasn't been raised already?

• Yes

Have you read the Code of Conduct?

• Yes

[welcome]

Thank you for opening your first issue here! 🛠

[cosmicBboy]

hi @tsheiner, the referenced guide has a Prerequisites admonition that assumes that the user has following the previous guide on creating a flyte project, which does tell the user to initialize a git repository:

Feel free to suggest a way that this can be made clearer!

[tsheiner]

Yes, understood. I believe the issue is not about init'ing a repo in the directory but that the user must also do at least one commit. Sounds obvious in retrospect but I missed it and as a result had trouble figuring out why I was getting an error when trying to follow the instructions to register my project:

(my_project) ➜  my_project git:(main) ✗ flytectl register files \
    --project flytesnacks \
    --domain development \
    --archive flyte-package.tgz \
    --version "$(git rev-parse HEAD)"
fatal: ambiguous argument 'HEAD': unknown revision or path not in the working tree.
Use '--' to separate paths from revisions, like this:
'git <command> [<revision>...] -- [<file>...]'
INFO[0000] [0] Couldn't find a config file []. Relying on env vars and pflags. 
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x2 addr=0x0 pc=0x105df4a64]

[neverett]

Addressing this in flyteorg/flytesnacks#1266