rebuild docker image from specific step

Question

I have the below Dockerfile.

FROM ubuntu:14.04
MAINTAINER Samuel Alexander 

RUN          


        

Answer 1

Another option is to delete the cached intermediate image you want to rebuild.

Find the hash of the intermediate image you wish to rebuild in your build output:

Step 27/42 : RUN lolarun.sh
 ---> Using cache
 ---> 328dfe03e436

Then delete that image:

$ docker image rmi 328dfe03e436

Or if it gives you an error and you're okay with forcing it:

$ docker image rmi -f 328dfe03e436

Finally, rerun your build command, and it will need to restart from that point because it's not in the cache.