Question

A DevOps team is deploying a containerized microservice across development, staging, and production environments. During validation they discover that the image tested in staging is not byte-for-byte identical to the image running in production, because the CI pipeline rebuilds the image from source at each environment stage. This has caused a defect that passed staging to surface only in production. Which change to the deployment workflow BEST prevents this inconsistency?

Accepted Answer

Build the image once, push it to a container registry with an immutable tag or digest, and promote that same artifact through each environment

Answer

Add more automated integration tests to the staging build so defects are caught before the production rebuild

Answer

Configure each environment to always pull the 'latest' tag from the registry to ensure the newest code is deployed

Answer

Increase the compute resources in staging so it more closely matches the production runtime environment