Missing documentation regarding Java tools requiring font packages for downstream containers

[jfy133]

As requested here, It would be useful to have 'guidelines' or FAQ entry to describe solutions for packages of Java tools that have GUIs, but downstream conda-derived docker or singularity images (e.g. from biocontainers) fail as particularly font libraries aren't included by default in the conda package.

Example (with solution: https://github.com/bioconda/bioconda-recipes/blob/master/recipes/fastqc/meta.yaml#L28 (adding fontconfigs and font-ttf-dejavu-sans-mono as requirement.