# Troubleshooting Slow Docker Image Builds > [!META]- Inline Metadata > [status:: boat] > [source:: [[MLE-110#^426trc|transient learning]]] > [tags:: #note/evergreen #state/boat #concepts/containerization/docker ] > [up:: [[Docker MOC]]] ## Slow Build During Python Dependency Installation This could be due to Docker attempting to build the dependency from the code rather than using a prebuilt wheel binary. This happens with older versions of dependencies, and especially hard-to-build dependencies like scikit-learn.