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[Falco]

@Samir_Faci

Unable to download data from https://rubygems.org/ - Net::OpenTimeout: execution expired

@Samir_Faci

A wget the rubygems works fine, internet connectivity is fine.

If internet connectivity is working on the host, you need to debug internet connectivity inside docker containers on that host.

Can't build container, no clear errors

The real problem is this one: If the server/container can’t access the Discourse source code in GitHub it won’t be able to build/update. Since you said it works on the host, you need to debug the container networking. Drop to a similar container shell with docker run --it debian:buster-slim bash and debug from there.