Clean up docker compose file for selfhosting (#1022)

* Clean up docker compose file

Removed nginx container (might want to put it back?)
Changed spacing to tabs for better readability
Changed the order, first the important stuff (plane) and later the database/redis
All containers should be in the same format (first container_name, then image, then restart, etc.).
Removed links because deprecated since compose version 2, all containers are in one docker network
Removed build from plane-api
Removed ports from redis and postgresql
Removed PGDATA directory because that's the default one
Renamed redis and db to plane-redis and plane-db

* Fixed spacing (again)

* Fix spacing (attempt 3)

* Pasting error - should be good now

* New compose download instructions

---------

Co-authored-by: pablohashescobar <118773738+pablohashescobar@users.noreply.github.com>

README.md

@@ -45,16 +45,12 @@ The easiest way to get started with Plane is by creating a [Plane Cloud](https:/
 
 ### Docker Compose Setup
 
-- Clone the Repository
+- Download the docker-compose.yml and setup.sh file
 
 ```bash
-git clone https://github.com/makeplane/plane
-```
-
-- Change Directory
-
-```bash
-cd plane
+curl https://raw.githubusercontent.com/makeplane/plane/develop/docker-compose-hub.yml --output docker-compose.yml
+curl https://raw.githubusercontent.com/makeplane/plane/develop/setup.sh --output setup.sh
+chmod +x setup.sh
 ```
 
 - Run setup.sh
@@ -76,7 +72,7 @@ set +a
 - Run Docker compose up
 
 ```bash
-docker-compose -f docker-compose-hub.yml up
+docker compose up -d
 ```
 
 <strong>You can use the default email and password for your first login `captain@plane.so` and `password123`.</strong>