Add Generic OAuth2 Provider Support

[ethantmcgee]

No description provided.

[ethantmcgee]

This pull request adds support for generic OAuth2 providers like Fusion Auth (https://fusionauth.io). I've also added a sample docker-compose.yml file to help with deploying the project more easily.

[ethantmcgee]

I also fixed an issue where the OTP / OTC codes did not work in mobile safari (and added integrity hashes / nonces for security)

[m-barthelemy]

Thanks for the PR!
I'll review it but it might take me a few weeks in order to get the time to do it + test the result.

[m-barthelemy]

Thanks a lot for the pull request!
Adding support for a generic Auth2 provider is great and I'd love to merge this.

I have added a few comments and questions, let me know what you think.

[m-barthelemy]

I like the idea of having these integrity checksums! I'm not too familiar with that, is there a way these could be generated automatically, for example during the build or during the stage when the assets are embedded into the binary? That would make further updates to the assets easier.

[ethantmcgee]

I am not sure, but it should be do-able. Mobile browsers complain quit a bit without those is the reason they were added.

[ethantmcgee]

Okay I have added a script for the integrity checksums. And mobile safari seems happy. I'm not sure how you want to integrate the script into the build pipeline

[ethantmcgee]

@m-barthelemy I have reviewed all your comments and made the changes you requested. I've tested this using my local setup and all seems good on both desktop and mobile. There is one comment left unresolved. Please let me know how you want to proceed.

[m-barthelemy]

@m-barthelemy I have reviewed all your comments and made the changes you requested. I've tested this using my local setup and all seems good on both desktop and mobile. There is one comment left unresolved. Please let me know how you want to proceed.

Thanks a lot!!
Give me while to go through your work again.