Hopefully this will prevent Couchbase from being rebuilt by Meteor/NPM.
Once rebuilt, it takes up a large amount of space in the image.

Use the corrected npm-shrinkwrap.json file.

MATS ignores the .npm directory in MATScommon as well. This prevents
Meteor from using the .npm/packages/npm-shrinkwrap.json file and
so Meteor pulls in the correct NPM package for the architecture.
Otherwise, Meteor will try to rebuild from source and greatly increase
the image size.

Additionally, reorganized the .dockerignore and updated the exclude
rules to better target artifacts that shouldn't be brought into the
image.

Reactivate our container image scanning, set the pipeline timeout
back to 30 minutes, and re-enable fail-fast builds