restructure container registry layout

Description

Restructures the layout of the container registry, for containers built nightly they will use

• containers.ligo.org/lscsoft/lalsuite:nightly-${PLATFORM}

and for tags will use:

• containers.ligo.org/lscsoft/lalsuite:${VERSION}-${PLATFORM}

this will allow use to set up container cleanup to automatically cleanup old containers.

API Changes and Justification

Backwards Compatible Changes

• This change does not modify any class/function/struct/type definitions in a public C header file or any Python class/function definitions
• This change adds new classes/functions/structs/types to a public C header file or Python module

Backwards Incompatible Changes

• This change modifies an existing class/function/struct/type definition in a public C header file or Python module
• This change removes an existing class/function/struct/type from a public C header file or Python module

If any of the Backwards Incompatible check boxes are ticked please provide a justification why this change is necessary and why it needs to be done in a backwards incompatible way.

Review Status

Please provide details on any reviews related to this change and and the associated reviewers.