This is something that stood out to me: removing the intermediate
container is part of a build step, but unlike the other output from
the build, wasn't indented (and prefixed with `--->`) to be shown
as part of the build.
This patch adds the `--->` prefix, to make it clearer what step the
removal was part of.
While at it, I also updated the message itself: this output is printed
_after_ the intermediate container has been removed, so we may as well
make it match reality, so I changed "removing" to "removed".
Before:
echo -e 'FROM busybox\nRUN echo hello > /dev/null\nRUN echo world > /dev/null\n' | DOCKER_BUILDKIT=0 docker build --no-cache -
Sending build context to Docker daemon 2.048kB
Step 1/3 : FROM busybox
---> a416a98b71e2
Step 2/3 : RUN echo hello > /dev/null
---> Running in a1a65b9365ac
Removing intermediate container a1a65b9365ac
---> 8c6b57ebebdd
Step 3/3 : RUN echo world > /dev/null
---> Running in 9fa977b763a5
Removing intermediate container 9fa977b763a5
---> 795c1f2fc7b9
Successfully built 795c1f2fc7b9
After:
echo -e 'FROM busybox\nRUN echo hello > /dev/null\nRUN echo world > /dev/null\n' | DOCKER_BUILDKIT=0 docker build --no-cache -
Sending build context to Docker daemon 2.048kB
Step 1/3 : FROM busybox
---> fc9db2894f4e
Step 2/3 : RUN echo hello > /dev/null
---> Running in 38d7c34c2178
---> Removed intermediate container 38d7c34c2178
---> 7c0dbc45111d
Step 3/3 : RUN echo world > /dev/null
---> Running in 629620285d4c
---> Removed intermediate container 629620285d4c
---> b92f70f2e57d
Successfully built b92f70f2e57d
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
5dc44f03f0