(I hope this is the right place for what appears to be an UdevQt bug.)
While running `docker build`, this error message appears multiple times:
UdevQt: unhandled device action "move"
STEPS TO REPRODUCE
1. Put this in a Dockerfile in its own directory:
FROM alpine:3.8
RUN echo hello
RUN echo world
2. Run `docker build .` from within the directory
OBSERVED RESULT
Sending build context to Docker daemon 2.048kB
Step 1/3 : FROM alpine:3.8
---> c8bccc0af957
Step 2/3 : RUN echo hello
---> Running in b2857dfcbb26
hello
UdevQt: unhandled device action "move"
Removing intermediate container b2857dfcbb26
---> 75635d880095
Step 3/3 : RUN echo world
---> Running in 8718e2e15b17
world
UdevQt: unhandled device action "move"
Removing intermediate container 8718e2e15b17
---> 84fa6aaab150
Successfully built 84fa6aaab150
EXPECTED RESULT
The «UdevQt: unhandled device action "move"» lines should obviously not be there.