Register docker hub images for essential Loc-I components

[jyucsiro]

These repos with Dockerfiles would benefit from having built images on docker hub for use:

• loci-cache-scripts,
• loci-integration-api,
• loci-notebooks,
• gds,
• excelerator

[jyucsiro]

loci-cache-scripts: https://hub.docker.com/r/csiroenvinf/loci-cache

loci-integration-api: https://hub.docker.com/r/csiroenvinf/loci-integration-api

loci-notebooks: https://hub.docker.com/r/csiroenvinf/loci-notebooks

gds: https://hub.docker.com/r/csiroenvinf/geometry-data-service

excelerator (tbc)