KNIME execution Docker image with Geospatial extension

[wybert]

The Docker file in this repository includes a geospatial extension and two Python Conda environments. While the setup works well on local machines, it encounters disk space limitations on GitHub Actions due to the constraints of free runners.

To address this, we could adjust the configuration to use only one Conda environment, allowing it to function on GitHub Actions within the available free-tier disk space.

Additionally, I would like to know if there is an existing solution for automating the build and publication of the Docker image to a public repository. This would facilitate wider access and streamline deployment processes.