update README.md

Author: 0xdnL

README.md

@@ -1,17 +1,26 @@
 # rust crud api
 
-following along with [dev.to/francescoxx/rust-crud-rest-api-3n45](https://dev.to/francescoxx/rust-crud-rest-api-3n45)
+following along: [dev.to/francescoxx/rust-crud-rest-api-3n45](https://dev.to/francescoxx/rust-crud-rest-api-3n45)
 
-## prerequesitse
+## prerequesites
 
 - docker
 - rust
 
 
-## usage
+## build
 
 ```sh
+DB_URL='postgres://postgres:postgres@db:5432/postgres' cargo build --release    # build locally
+docker compose -f docker-compose.yaml up -d                                     # build via docker
+```
+
+## usage
 
+```sh
+docker compose -f docker-compose.yaml exec db psql -U postgres    # connect to db
 ```
 
 ## see also
+
+- [doc.rust-lang.org/rust-by-example/flow_control/match](https://doc.rust-lang.org/rust-by-example/flow_control/match.html)