Because:
- We want to clean up our docker build
- We no longer used our service specific images
This Commit:
- Switches to multi stage docker build
- Removes unused building of individual services
- Removes used script that sets environment variables.
- Removes `workspaces focus` call that resulted in redundant installs
- Removes trap on build logs.
- Uses circleci DLC to get cache hits for fxa-utils and fxa-build-utils
- Removes scripts that build service specific images
- Cleans up naming conventions to reflect that only one image is being built
dschom