Do not assume S3

[steren]

I successfully deployed logpaste to Google Cloud on Google Cloud Run and Google Cloud Storage

I had the change the code in the following way:

• Remove these 3 lines from litestream.yml since litestream is able to pick up credentials from the environment directly
• Update the logic to decide to use litestream

Then, I built with Cloud Build gcloud builds submit . --tag gcr.io/<PROJECT>/logpaste:latest

And deployed to Cloud Run: gcloud beta run deploy logpaste --image gcr.io/<PROJECT>/logpaste:latest --set-env-vars DB_REPLICA_URL=gcs://<BUCKET>/db --execution-environment gen2 --no-cpu-throttling

I can try to send a PR: we can enable litestream if DB_REPLICA_URL is set, but I'm not sure about the best way handle the translation of envvars to litestream.yml

[mtlynch]

Thanks for reporting this and sharing the Google Cloud Run steps, @steren!

I tried your instructions, and it's pretty cool running it on Cloud Run. I was able to deploy successfully after #134 without removing the LITESTREAM lines from litestream.yml. Do you run into issues with those lines?

I'm adding instructions for Cloud Run here: #135

[steren]

Great to hear the changes to litestream.yml aren't needed, I guess they aren't picked up if the values are empty.

I left a few comments on the guide. Thanks for writing!