Docker image merge utility

NOTE: Combining images from multiple sources (and especially from multiple base images) isn't the best practice. Or even an accepted practice. Regardless, it can be useful in some scenarios. I hold no responsibility for the broken abominations you may create with this tool.

pip install dsplice

dsplice -t newimage:latest image-to-merge1:latest image-to-merge2:latest

dsplice will automatically resolve any file conflicts between the two images by using the most recently modified version of a file. You can prevent this behavior with the -i interactive mode option.