Initial Git Tips documentation for contributors (#2315)

docs/contrib/docs.md

@@ -17,6 +17,8 @@ To generate the website, for simplicity we recommend using [GitHub Codespaces](c
 
 1. `pipenv shell`: This enters a [Python "virtual environment" (`venv`)](https://docs.python.org/3/library/venv.html), using [`pipenv`](https://pipenv.pypa.io/)
 
+1. `pipenv install`: This install the required tools listed in the [`Pipfile`](https://github.com/google/android-fhir/blob/master/Pipfile)
+
 1. `mkdocs serve`
 
 1. Confirm Codespace's _"Port Forward"_ prompt to open `https://...app.github.dev`, et voilà!

docs/contrib/git.md

@@ -0,0 +1,73 @@
+# Git Tips
+
+This page documents [Git](https://git-scm.com) tips for contributors to this project.
+
+This project generally follows [these guidelines](https://github.com/google/fhir-data-pipes/blob/master/doc/review_process.md) from our `fhir-data-pipes` sister project.
+
+## Usage
+
+### Edit on GitHub Web UI
+
+To make simple single file changes, notably e.g. to `docs/*.md` Markdown files,
+it can be convenient to simply click the _"Pencil" button_ on GitHub's Web UI
+to _Edit in place._ For a more fully fledged IDE for docs, see [Docs](docs.md).
+
+### Locally with Git CLI
+
+Using the standard `git` CLI client, you would typically do the following:
+
+1. Initially, one time only, click Fork on https://github.com/google/android-fhir/tree/master and:
+
+       git clone [email protected]:google/android-fhir.git
+       cd android-fhir
+       git remote add YOUR-UID [email protected]:YOUR-UID/android-fhir.git
+
+2. Now every time you want to propose a change, you do:
+
+       git checkout -b NEW-BRANCH-NAME
+       ... do some work ...
+       git commit -a -m "MESSAGE ABOUT WHAT YOU CHANGED"
+       git push YOUR-UID
+
+   This will print something with a URL you can click on to create a Pull Request.
+
+3. To _"rebase"_ your local branch so that it has the latest upstream work:
+
+       git checkout master
+       git pull
+       git checkout THAT-BRANCH-NAME
+       git rebase master
+
+4. When you get code review feedback and would like to make some changes:
+
+       git checkout THAT-BRANCH-NAME
+       ... do some work ...
+       git commit -a -m "Incorporated review feedback."
+       git push --force-with-lease YOUR-UID
+
+Note that, as per [these guidelines](https://github.com/google/fhir-data-pipes/blob/master/doc/review_process.md) we do not `commit --amend`. (Maintainers will _"squash"_ when merging PRs.)
+
+### Locally with GitHub's CLI
+
+https://cli.github.com is a GitHub specific tool which allows you to do certain
+operations from the CLI instead of having to click on the GitHub Web UI, e.g. :
+
+    gh repo fork google/android-fhir --clone --remote
+
+    gh pr create
+
+    gh pr checkout 2306
+
+https://github.com/topics/gh-extension has a lot of fancy extensions for `gh`.
+
+`gh` is also useful to manage GitHub Secrets.
+
+## Processes
+
+## Further Resources
+
+* https://git-scm.com/doc
+* https://en.wikipedia.org/wiki/Git
+* https://developer.mozilla.org/en-US/docs/Learn/Tools_and_testing/GitHub
+* https://docs.github.com/en/get-started/quickstart/hello-world
+* https://www.w3schools.com/git/git_intro.asp

mkdocs.yaml

@@ -44,6 +44,7 @@ nav:
       - Use Snapshots: use/Snapshots.md
   - Contributors:
       - Contributing: contrib/index.md
+      - Git Guideline: contrib/git.md
       - Codespaces: contrib/codespaces.md
       - Documentation: contrib/docs.md
       - contrib/dependencies.md