feat: PostgreSQL driver support

cmd/server/main.go

@@ -46,8 +46,8 @@ var envDefaults = map[string]string{
 	"PORT":                           "8080",
 	"DB_FILE":                        "./data/renewcms.db",
 	config.EnvDatabaseDriver:         config.DefaultDatabaseDriver,
-	"DB_PORT":                        config.DefaultDatabasePort,
 	"DB_TLS":                         config.DefaultDatabaseTLS,
+	"DB_SSLMODE":                     config.DefaultDatabaseSSLMode,
 	"DB_MAX_OPEN_CONNS":              config.DefaultMaxOpenConns,
 	"DB_MAX_IDLE_CONNS":              config.DefaultMaxIdleConns,
 	"DB_CONN_MAX_LIFETIME_SECONDS":   config.DefaultConnMaxLifetimeSeconds,