[docs] Build notebooks from Markdown (#2570)

* 📝 add mechanism for building colab notebook

* 🖍 add notebooks to correct folder

* 🖍 fix folder name

.github/workflows/build_documentation.yml

@@ -13,6 +13,7 @@ jobs:
     with:
       commit_sha: ${{ github.sha }}
       package: diffusers
+      notebook_folder: diffusers_doc
       languages: en ko
     secrets:
       token: ${{ secrets.HUGGINGFACE_PUSH }}

docs/source/_config.py

+# docstyle-ignore
+INSTALL_CONTENT = """
+# Diffusers installation
+! pip install diffusers transformers datasets accelerate
+# To install from source instead of the last release, comment the command above and uncomment the following one.
+# ! pip install git+https://github.com/huggingface/diffusers.git
+"""
+
+notebook_first_cells = [{"type": "code", "content": INSTALL_CONTENT}]
\ No newline at end of file