If you haven't installed, please install from Atlassian Marketplace here: https://marketplace.atlassian.com/apps/1220365/
You can use Jupyter Notebook Viewer to render notebooks that are in your local computer or pushed to VCS like Git/Github/Bitbucket which are accessible via an URL.
|Local computer||Upload .ipynb files and render them in Confluence pages|
|From Github private repository||Embed Jupyter Notebook from private Github repository|
|Accessible publicly from an URL||View Notebooks available publicly|