Update README (docker-compose deprecation)

README.md

@@ -14,7 +14,7 @@ This example project was created to demonstrate a simple application built with
 First, make your own configuration for your local environment.
 
 - Copy `config.example.json` to `config.json`.
-- Start the database container with `docker-compose up`.
+- Start the database container with `docker compose up`.
 - Run migrations with [dbmate](https://github.com/amacneil/dbmate): `dbmate -u postgres://dbuser:[email protected]:5432/blog?sslmode=disable -d ./database/migrations --no-dump-schema migrate`
 - Run `go run main.go` in your project's directory to start the server. If you want to seed your database with random records use the `-seed` flag: `go run main.go -seed`. Users will all be created with the following password: `p4ssW0rd_`
 

docker-compose.yml

@@ -1,4 +1,3 @@
-version: "3"
 services:
   postgres:
     image: postgres:latest