Image
Core Concept 2: The "Factory & Assembly Line" (Why Two Pipelines)
27 October 2025
Stop wasting 2-3 minutes rebuilding your Docker image on every commit!
The secret to a fast pipeline is splitting your work into the "Factory & Assembly Line."
- The Factory: Runs rarely (only when your Dockerfile changes) to build the slow, reliable "Locked Box" image.
- The Assembly Line: Runs constantly (on every commit) but skips the Docker build entirely. It simply downloads the pre-built image from the Factory and uses it to instantly run your fast code tests.
The result? Your daily pipeline runs are dramatically faster, only executing the work that matters: testing your code.
The secret to a fast pipeline is splitting your work into the "Factory & Assembly Line."
- The Factory: Runs rarely (only when your Dockerfile changes) to build the slow, reliable "Locked Box" image.
- The Assembly Line: Runs constantly (on every commit) but skips the Docker build entirely. It simply downloads the pre-built image from the Factory and uses it to instantly run your fast code tests.
The result? Your daily pipeline runs are dramatically faster, only executing the work that matters: testing your code.