Adding bento ref

[vdonkor]

Modified bento backend

[michael-fleming]

can we make the following changes:

1. for all builds can we use "{{ container_build_path }}" for the path parameter - this will make the code more adaptable
2. for the frontend build can we delete the commented build steps. we won't be using these going forward so we won't need to keep them to uncomment them
3. can we add the trivy scanning steps for all of the builds. this should match what is done in the backend build