adding copilot instructions

Author: joshjohanning

.github/copilot-instructions.md

@@ -0,0 +1,63 @@
+# Copilot instructions
+
+## Authoring / editing blog posts
+
+### Formatting
+
+- Add `{: .filepath}` after filenames to get syntax highlighting
+- If it makes sense, after a code block or YML snippet, add a file name on the next line: `{: file='/name/of/file.md'}`
+  - For sample usage/examples, this doesn't make sense
+- Always describe the code block
+- Add the `{: .nolineno}` under certain code blocks:
+  - That are 1 line
+  - Usage examples - not code that needs line-by-line explanation (unless it's a really complex example)
+  - Command variations - showing different ways to run the same script
+- Use `{: .prompt-info }`, `{: .prompt-tip }`, `{: .prompt-warning }`, and `{: .prompt-danger }` for callouts
+- Wrap YML snippets with the `{% raw %}` and `{% endraw %}` tags to avoid Liquid parsing issues
+- Do not leave any trailing whitespace at the end of lines
+
+### Images
+
+- When including images in a post, always include both light and dark variants
+- Always use a caption under the post
+- Always include alt text
+
+Here's an example:
+
+```md
+![Markdown badges in a GitHub organization's README](markdown-badges-light.png){: .shadow }{: .light }
+![Markdown badges in a GitHub organization's README](markdown-badges-dark.png){: .shadow }{: .dark }
+_Markdown badges in a GitHub organization's README_
+```
+
+### Style 
+
+- I typically always have an `## Overview` and `## Summary` section
+
+### Frontmatter
+
+For new posts, always use these frontmatter fields (and in this order):
+
+```yml
+---
+title: 'GitHub Apps: Configuring the Git Email for Commits'
+author: Josh Johanning
+date: 2024-11-22 12:00:00 -0600
+description: A guide on how to set up the proper Git email address for commits made by your GitHub App to ensure proper commit attribution
+categories: [GitHub, Apps]
+tags: [GitHub, GitHub Actions, GitHub Apps, GitHub Issues, Git]
+media_subpath: /assets/screenshots/2024-11-22-github-apps-commit-email
+image:
+  path: github-app-commit-light.png
+  width: 100%
+  height: 100%
+  alt: A commit from a GitHub app in a GitHub repository with the commit being attributed to the app
+---
+```
+
+## Documentation
+
+This is the source of truth for other syntax highlighting, formatting, and authoring examples:
+
+- [Text and Typography](https://chirpy.cotes.page/posts/text-and-typography/)
+- [Writing a New Post](https://chirpy.cotes.page/posts/write-a-new-post/)