An alternative GRIB Driver for GDAL using EcCodes, to maximize compatibility with GRIB1 and GRIB2 formats. Tested on Ubuntu 20.04 with GDAL 3.1.2 (PROJ 7.1.0) and EcCodes 2.18.0 .
git clone https://github.com/coppolafab/gdal_grib_demo.git
cd gdal_grib_demo
docker run --rm -it -v $PWD/gribs:/gribs coppolafab/gdal_grib_demo
gdalinfo /gribs/mn2t6.grb