How to clear docker caches in build_openroad.sh script

[mguthaus]

If I update my version of OpenROAD, the build_openroad.sh script will use the Docker cached layers instead of rebuilding things. Even if I do a
./build_openroad.sh --clean-force
and it erases things, it still finds the cached docker images.

Do we have to manually delete the docker cache?

Am I missing something simple in the preferred development flow?

[mguthaus]

Example, in OpenROAD-flow-scripts:

git checkout 9c4d1977e334180d79018c01bb4ed3c368e96d29
./build_openroad.sh
git checkout 650e321b0093881d5007662642a9d12b0a2f1c92
git submodule update --init --recursive
./build_openroad.sh --clean-force

and you will get an identical docker image.

[mguthaus]

The docker build script was not tagging the image as the "latest" so it was always running an old image.