Technical guide to optimizing Docker build time for BitBucket Pipelines by switching from Ruby base image to Alpine Linux. Covers Alpine's small size with package management, installing Ruby and NodeJS, Java installation challenges on Alpine, pre-installing Ruby gems with bundle install, and creating Dockerfile and pushing to Docker Hub.

An evaluation of BitBucket Pipelines, a continuous integration service reminiscent of Codeship. Discusses trying to replace Codeship with BitBucket Pipelines for publishing this blog, showing how to configure pipeline tasks and examining feature similarities, noting potential time savings from removing Docker image downloads in build process.