Update core docker image to latest osgeo/gdal images

[SpacemanPaul]

Expected behaviour

Default core docker build uses latest osgeo/gdal ubuntu as the base image.

Actual behaviour

An old osgeo/gdal image is loaded from DockerHub - osgeo/gdal has migrated to Github containers (ghcr.io)

See https://github.com/OSGeo/gdal/

[benjimin]

This sounds like a very minor proposed change.

An alternative would be to switch to a micromamba image (i.e., let condaforge handle the binary interdependencies). Perhaps this could be done in such a way as to also be a test of the ODC conda recipe?

[SpacemanPaul]

Perhaps this could be done in such a way as to also be a test of the ODC conda recipe?

Only at the price of either losing our existing test of pure pip dependency resolution - or maintaining two separate pip and conda based docker images.

The former would be a deal breaker IMO, but maintaining two docker images for the added environmental test coverage might be worth the effort. Having said that, we do have minimal "smoke tests" for testing the conda recipe in different environments.

[alexgleith]

I'm against moving to a conda-based Docker environment.

In short, conda is a big complex system and is quite opinionated. Using the osgeo/gdal Docker image as a base is simply using a reliable, fresh install of GDAL and is the pattern used for most of our ODC tools... we should be testing against that environment.

Moving the source of the base container is a very minor thing, as @benjimin says.