Warmup suggestion

[ruimelodev]

I'm running QReader inside a Docker container that has a QR-code decode process with multiple threads.
Every time the container starts, all the threads start pulling the trained model and chaos erupts.

I've found a workaround by adding a warmup command in my Dockerfile:

RUN python -c "from qreader import QReader; QReader()"

However, it would be good to have some kind of bin to get these images, similar to how Kraken pulls theirs.
Something like:

qreader init

Thank you!