[services] Remove container_name from docker-compose file

Summary:
Because Docker container names must be unique, we cannot scale a service beyond 1 container that's why we need to remove container_name from
service's docker-compose file.

Related diff: D3847

Linear task: ENG-1129

Test Plan: Run docker compose up tunnelbroker-server, docker compose up backup-server, docker compose up blob-server.

Reviewers: jimpo, palys-swm, karol-bisztyga, ashoat

Reviewed By: palys-swm, ashoat

Subscribers: ashoat, palys-swm, Adrian, atul, karol-bisztyga, yayabosh

Differential Revision: https://phabricator.ashoat.com/D4014