[New Feature]: Include instructions for using pre-built container from GHCR

[whatnick]

Checked for duplicates

Yes - I've already checked

Alternatives considered

Yes - and alternatives don't suffice

Related problems

README instructions point to building from Docker file which can take a while and depend on users local environment somewhat.

Describe the feature request

The repository CI builds a GHCR container and this can be directly pulled to accelerate setup and usage. Happy to make PR to this effect.

• A pointer to creating GHCR token
• Pulling the image via docker pull ghcr.io/isce-framework/dolphin:latest
• Running the image and mounting volumes to perform basic processing.

[scottstanie]

Did you already figure out how to do this for your case and would like to contribute? Or were you looking for guidance?

A pointer to creating GHCR token

Interesting, did you need to do this to pull the docker image?

[whatnick]

Already figured these bits out due to familiarity with docker based environments. Initial pull fails if user is not logged in. All GHCR hosted containers need to be credentialized to prevent misuse and rate limiting. Perhaps worth documenting the tag usage in :latest vs :develop vs versioned release. I figured it out by reading the github workflow.