Use this image as a base to build dockerized python application that use the Piglow (https://shop.pimoroni.com/products/piglow). See the "rpi-piglow-cpu" container for an example.
The container should be run with
--device /dev/i2c-1 so that the container can access the I2C bus driver.
Dockerfile and more explanations can be found at https://github.com/jmMeessen/rpi-docker-images/tree/master/rpi-piglow