fix: Actually do debug logging (#4851)

Currently all debug logs are dropped in google cloud with no option to
enable them

Author: another-rex

deployment/clouddeploy/gke-workers/base/gitter.yaml

@@ -32,6 +32,8 @@ spec:
         env:
         - name: GOMEMLIMIT
           value: "100GiB"
+        - name: DEBUG_LOG
+          value: "true"
         volumeMounts:
         - mountPath: /work
           name: disk-data

go/logger/init.go

@@ -118,8 +118,14 @@ func initTracing(ctx context.Context, projectID, serviceName string) {
 }
 
 func cloudHandlerOptions() *slog.HandlerOptions {
+	level := slog.LevelInfo
+	if os.Getenv("DEBUG_LOG") != "" {
+		level = slog.LevelDebug
+	}
+
 	return &slog.HandlerOptions{
 		AddSource: true,
+		Level:     level,
 		ReplaceAttr: func(_ []string, a slog.Attr) slog.Attr {
 			// Remap "level" to "severity"
 			if a.Key == slog.LevelKey {