The easiest way to provide some resilience to the build process is to add a pull-through cache using AWS ECR. It might backfire due to egress costs, though, if

The easiest way to provide some resilience to the build process is to add a pull-through cache using AWS ECR. It might backfire due to egress costs, though, if you're building outside the AWS infrastructure. It's actually an interesting exercise to enumerate _all_ the external dependencies. But yeah, avoiding them all seems to be less than helpful for the vast majority of users.