fix music command and add dockerfile

src/main/kotlin/cn/rtast/fancybot/FancyBot.kt

@@ -12,29 +12,43 @@ import cn.rtast.fancybot.commands.JrrpCommand
 import cn.rtast.fancybot.commands.MusicCommand
 import cn.rtast.rob.ROneBotFactory
 import cn.rtast.rob.entity.GroupMessage
-import cn.rtast.rob.util.BaseCommand
 import cn.rtast.rob.util.ob.OBMessage
+import com.sun.net.httpserver.HttpServer
 import org.java_websocket.WebSocket
+import java.net.InetSocketAddress
 
 class FancyBot : OBMessage {
-    override fun onGroupMessage(websocket: WebSocket, message: GroupMessage, json: String) {
+    override suspend fun onGroupMessage(websocket: WebSocket, message: GroupMessage, json: String) {
         println(message.rawMessage)
     }
 }
 
-val commands = listOf<BaseCommand>(
+val commands = listOf(
     EchoCommand(),
     JrrpCommand(),
     MusicCommand()
 )
 
+fun createFakeServer() {
+    val server = HttpServer.create(InetSocketAddress(8000), 0)
+    server.createContext("/") { exchange ->
+        val response = "Hello, Kotlin HTTP Server!"
+        exchange.sendResponseHeaders(200, response.toByteArray().size.toLong())
+        val os = exchange.responseBody
+        os.write(response.toByteArray())
+        os.close()
+    }
+    server.start()
+    println("Server is running on port 8000...")
+}
+
+
 fun main() {
     val address = System.getenv("WS_ADDRESS")
     val password = System.getenv("WS_PASSWORD")
     val fancyBot = FancyBot()
     val wsClient = ROneBotFactory.createClient(address, password, fancyBot)
     val commandManager = wsClient.commandManager
-    commands.forEach {
-        commandManager.register(it)
-    }
+    commands.forEach { commandManager.register(it) }
+    createFakeServer()
 }