feat: Introduce env for bind address

README.md

@@ -6,4 +6,5 @@
 
 Environmental variables:
 - `SHORTEN_HOST` - hostname
+- `SHORTEN_BIND` - bind address (default: `127.0.0.1:4488`)
 - `POSTGRES_URI` - lib/pq connection string (see [here](https://pkg.go.dev/github.com/lib/pq#section-documentation))

main.go

@@ -71,7 +71,11 @@ func main() {
 		panic(err)
 	}
 
-	panic(http.ListenAndServe("127.0.0.1:4488", &Handler{db: db}))
+	bind := os.Getenv("SHORTEN_BIND")
+	if bind == "" {
+		bind = "127.0.0.1:4488"
+	}
+	panic(http.ListenAndServe(bind, &Handler{db: db}))
 }
 
 type Handler struct {