Set single export entry outside of session initialization

Signed-off-by: Edgar Lee <edgarl@netflix.com>
thaJeztah · Apr 8, 2020 · d42b8bf · d42b8bf
1 parent 423f5f8
commit d42b8bf
Showing 1 changed file with 6 additions and 7 deletions.
diff --git a/client/solve.go b/client/solve.go
@@ -115,6 +115,12 @@ func (c *Client) solve(ctx context.Context, def *llb.Definition, runGateway runG
 	}
 
 	var ex ExportEntry
+	if len(opt.Exports) > 1 {
+		return nil, errors.New("currently only single Exports can be specified")
+	}
+	if len(opt.Exports) == 1 {
+		ex = opt.Exports[0]
+	}
 
 	if !opt.SessionPreInitialized {
 		if len(syncedDirs) > 0 {
@@ -125,13 +131,6 @@ func (c *Client) solve(ctx context.Context, def *llb.Definition, runGateway runG
 			s.Allow(a)
 		}
 
-		if len(opt.Exports) > 1 {
-			return nil, errors.New("currently only single Exports can be specified")
-		}
-		if len(opt.Exports) == 1 {
-			ex = opt.Exports[0]
-		}
-
 		switch ex.Type {
 		case ExporterLocal:
 			if ex.Output != nil {