fixup! Run PR validation on multiple OS

Author: skarpovdev

kotlin-sdk-test/src/jvmTest/kotlin/io/modelcontextprotocol/kotlin/sdk/integration/typescript/TsTestBase.kt

@@ -144,9 +144,6 @@ abstract class TsTestBase {
     protected fun startTypeScriptServer(port: Int): ContainerProcess {
         val container = GenericContainer(tsDockerImage()).apply {
             withImagePullPolicy(PullPolicy.defaultPolicy())
-            withCreateContainerCmdModifier { cmd ->
-                cmd.withPlatform("linux/amd64")
-            }
             withExposedPorts(port)
             mapOf(
                 "MCP_HOST" to "0.0.0.0",

kotlin-sdk-test/src/jvmTest/kotlin/io/modelcontextprotocol/kotlin/sdk/integration/utils/Dockerfile

@@ -1,6 +1,6 @@
 # Docker image for running TypeScript SDK test servers/clients with SSE over HTTP and STDIO
 
-FROM node:20-alpine AS base
+FROM --platform=linux/amd64 node:20-alpine AS base
 
 # 1) System deps
 RUN apk add --no-cache git