ci: rm explicit container name & obsolete version attr (#2120)

## What kind of change does this PR introduce?

Having explicit `container_name` defined in the docker compose prevents
utilizing [git worktrees](https://git-scm.com/docs/git-worktree). By
removing, each container name will be prefixed with the current working
directory, hence preventing any name collisions.

Also removing the `version` attribute per the warning:
```
the attribute `version` is obsolete, it will be ignored, please remove it to avoid potential confusion
```

Author: cemalkilic

CONTRIBUTING.md

@@ -122,7 +122,7 @@ docker-compose -f docker-compose-dev.yml build postgres
 docker-compose -f docker-compose-dev.yml up postgres
 ```
 
-You should then see in Docker that `auth_postgresql` is running on `port: 5432`.
+You should then see in Docker that `auth-postgres-1` is running on `port: 5432`.
 
 > **Important** If you happen to already have a local running instance of Postgres running on the port `5432` because you
 > may have installed via [homebrew on macOS](https://formulae.brew.sh/formula/postgresql) then be certain to stop the process using:
@@ -461,17 +461,12 @@ export GOTRUE_DB_DATABASE_URL="postgres://supabase_auth_admin:root@localhost:743
 
 ## Helpful Docker Commands
 
-```
-// file: docker-compose-dev.yml
-container_name: auth_postgres
-```
-
 ```zsh
 # Command line into bash on the PostgreSQL container
-docker exec -it auth_postgres bash
+docker exec -it auth-postgres-1 bash
 
 # Removes Container
-docker container rm -f auth_postgres
+docker container rm -f auth-postgres-1
 
 # Removes volume
 docker volume rm postgres_data

README.md

@@ -43,7 +43,7 @@ Create a `.env.docker` file to store your own custom env vars. See [`example.doc
 
 1. `make build`
 2. `make dev`
-3. `docker ps` should show 2 docker containers (`auth_postgresql` and `gotrue_gotrue`)
+3. `docker ps` should show 2 docker containers (`auth-auth-1` and `auth-postgres-1`)
 4. That's it! Visit the [health checkendpoint](http://localhost:9999/health) to confirm that auth is running.
 
 ## Running in production

docker-compose-dev.yml

@@ -1,7 +1,5 @@
-version: "3.9"
 services:
   auth:
-    container_name: auth
     depends_on:
       - postgres
     build:
@@ -19,7 +17,6 @@ services:
     build:
       context: .
       dockerfile: Dockerfile.postgres.dev
-    container_name: auth_postgres
     ports:
       - '5432:5432'
     volumes: