Use simple connection string in config

postgres/conn.go

@@ -18,8 +18,7 @@ type Database struct {
 }
 
 // Connect to a database
-func Connect(server string, user string, password string, database string) (*Database, error) {
-	connString := fmt.Sprintf("postgres://%s:%s@%s/%s", user, password, server, database)
+func Connect(connString string) (*Database, error) {
 	conn, err := sql.Open("pgx", connString)
 	if err != nil {
 		return nil, fmt.Errorf("open connection: %w", err)