Resolves ENG-2305
I've decided to use a multi-staged build is described in the above Linear issue. In short, Tonic >= 0.8 requires both rust and protobuf to be installed, and in other configurations the image is either huge or long to build.
Other minor changes:
- Added Rust target directory to dockerignore
- Modified the docker-compose volumes to load AWS credentials appropriately
- Fixed the Localstack URL - it should look like this from the begginning (see other services)
- Deleted the links entry in Cargo.toml as we don't link any native library here and release build fails.