fix: use LOG_LEVEL to set server log severity (#4937)

server/env.ts

@@ -170,6 +170,12 @@ export class Environment {
    */
   public DEBUG = process.env.DEBUG || "";
 
+  /**
+   * Configure lowest severity level for server logs
+   */
+  @IsIn(["error", "warn", "info", "http", "verbose", "debug", "silly"])
+  public LOG_LEVEL = process.env.LOG_LEVEL || "info";
+
   /**
    * How many processes should be spawned. As a reasonable rule divide your
    * server's available memory by 512 for a rough estimate

server/logging/Logger.ts

@@ -8,7 +8,6 @@ import Sentry from "@server/logging/sentry";
 import * as Tracing from "./tracer";
 
 const isProduction = env.ENVIRONMENT === "production";
-const isDev = env.ENVIRONMENT === "development";
 
 type LogCategory =
   | "lifecycle"
@@ -30,7 +29,7 @@ class Logger {
 
   constructor() {
     this.output = winston.createLogger({
-      level: isDev ? "debug" : "info",
+      level: env.LOG_LEVEL,
     });
     this.output.add(
       new winston.transports.Console({