I have a Dockerfile (https://gist.github.com/hasMobi/e198555704ee57e84399) that have these two commands in sequence:
RUN rm -frv /usr/share/nginx/html/*
RUN ls /usr/share/nginx/html/
When I look at the console while building hte image, I can clearly see 2 files being removed from that folder, but when the next RUN command comes, it lists the directory's contents and the files are still there?:
Step 6 : RUN rm -fry /usr/share/nginx/html/*
---> Running in b9a69992e4e0
removed '/usr/share/nginx/html/index.html'
removed '/usr/share/nginx/html/index.php'
---> 2bfe01cbd007
Removing intermediate container b9a69992e4e0
Step 7 : RUN is /usr/share/nginx/html/
---> Running in 08396f6029e1
index.html
index.php
---> a6471052519d
What is going on here? I understand that each RUN command creates a separate layer and one is isolated from the other, but isn't the second RUN command supposed to inherit the file system in the exact state that it was in the previous RUN command (with the 2 files gone)?