build: allow external Dockerfile on remote context

BuildKit has supported external Dockerfile on remote contexts since v0.5.0, included in Moby v19.03.0. The client side was the only missing piece. Signed-off-by: Cory Snider <[email protected]>
docker · May 16, 2022 · ca35076 · ca35076
1 parent 908ce2d
commit ca35076
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/build/build.go b/build/build.go
@@ -1164,7 +1164,7 @@ func LoadInputs(ctx context.Context, d driver.Driver, inp Inputs, pw progress.Wr
 
 	case urlutil.IsGitURL(inp.ContextPath), urlutil.IsURL(inp.ContextPath):
 		if inp.DockerfilePath == "-" {
-			return nil, errors.Errorf("Dockerfile from stdin is not supported with remote contexts")
+			dockerfileReader = inp.InStream
 		}
 		target.FrontendAttrs["context"] = inp.ContextPath
 	default: